The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
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COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Acacia Research Corp. COMMON 003881307 22,186 3,413,174 SH   SOLE 0 1,436,189 0 1,976,985
Accenture plc COMMON G1151C101 1,122 9,576 SH   SOLE 0 3,975 0 5,601
AFLAC Inc. COMMON 001055102 113,014 1,623,769 SH   SOLE 0 1,617,749 0 6,020
American Electric Technologies, Inc. COMMON 025576109 2,061 1,329,911 SH   SOLE 0 780,519 0 549,392
American Express Co. COMMON 025816109 61,511 830,330 SH   SOLE 0 303,787 0 526,543
Anixter Intl Inc. COMMON 035290105 158,284 1,952,923 SH   SOLE 0 1,820,954 0 131,969
Ansys, Inc. COMMON 03662Q105 7,590 82,060 SH   SOLE 0 34,812 0 47,248
Apache Corp. COMMON 037411105 4,888 77,018 SH   SOLE 0 77,018 0 0
ArcBest Corp. COMMON 03937C105 2,622 94,820 SH   SOLE 0 94,820 0 0
Aspen Aerogels Inc. COMMON 04523Y105 6,836 1,655,326 SH   SOLE 0 957,623 0 697,703
AstroNova, Inc. COMMON 04638F108 12,568 881,974 SH   SOLE 0 521,189 0 360,785
Atlas Financial Holdings, Inc. COMMON G06207115 17,692 980,172 SH   SOLE 0 838,922 0 141,250
AXT Inc. COMMON 00246W103 6,453 1,344,402 SH   SOLE 0 779,122 0 565,280
Baidu, Inc. ADR ADR 056752108 172,006 1,046,203 SH   SOLE 0 558,321 0 487,882
Ballantyne Strong, Inc. COMMON 058516105 12,831 1,603,903 SH   SOLE 0 939,488 0 664,415
Banco Santander-Chile ADR ADR 05965X109 21,564 986,025 SH   SOLE 0 411,769 0 574,256
Bank of New York Mellon Corp. COMMON 064058100 5,353 112,970 SH   SOLE 0 112,970 0 0
Barrick Gold Corp. COMMON 067901108 6,327 395,944 SH   SOLE 0 395,944 0 0
Bed Bath & Beyond Inc. COMMON 075896100 3,952 97,240 SH   SOLE 0 97,240 0 0
Berkshire Hathaway Inc. COMMON 084670702 76,268 467,962 SH   SOLE 0 198,710 0 269,252
Bio-Rad Laboratories, Inc. COMMON 090572207 161,651 886,827 SH   SOLE 0 822,693 0 64,134
Blackstone Group L.P. COMMON 09253U108 38,408 1,420,949 SH   SOLE 0 1,415,774 0 5,175
BOK Financial Corp. COMMON 05561Q201 20,173 242,933 SH   SOLE 0 221,547 0 21,386
BorgWarner Inc. COMMON 099724106 69,127 1,752,713 SH   SOLE 0 1,745,628 0 7,085
Brady Corp. COMMON 104674106 106,268 2,830,048 SH   SOLE 0 2,533,433 0 296,615
Brink's Co. COMMON 109696104 38,259 927,499 SH   SOLE 0 801,950 0 125,549
Bristow Group Inc. COMMON 110394103 200,489 9,789,512 SH   SOLE 0 9,215,444 0 574,068
British American Tobacco plc ADR ADR 110448107 1,091 9,680 SH   SOLE 0 9,277 0 403
Brooks Automation, Inc. COMMON 114340102 11,278 660,710 SH   SOLE 0 660,710 0 0
Canon Inc. ADR ADR 138006309 493 17,529 SH   SOLE 0 17,529 0 0
Capital Southwest Corp. COMMON 140501107 15,178 939,799 SH   SOLE 0 732,323 0 207,476
Cardinal Health, Inc. COMMON 14149Y108 2,629 36,526 SH   SOLE 0 36,526 0 0
CBRE Group, Inc. COMMON 12504L109 120,347 3,821,756 SH   SOLE 0 3,601,846 0 219,910
CBS Corp. COMMON 124857202 76,386 1,200,657 SH   SOLE 0 1,196,410 0 4,247
CEB Inc. COMMON 125134106 32,121 530,057 SH   SOLE 0 456,607 0 73,450
Century Casinos, Inc. COMMON 156492100 28,615 3,476,882 SH   SOLE 0 2,651,523 0 825,359
Charles River Laboratories Intl, Inc. COMMON 159864107 120,141 1,576,856 SH   SOLE 0 1,410,297 0 166,559
Cheesecake Factory Inc. COMMON 163072101 2,701 45,115 SH   SOLE 0 19,071 0 26,044
China Mobile Ltd. ADR ADR 16941M109 47,851 912,673 SH   SOLE 0 701,356 0 211,317
Church & Dwight Co., Inc. COMMON 171340102 1,174 26,571 SH   SOLE 0 11,235 0 15,336
CME Group Inc. COMMON 12572Q105 8,216 71,231 SH   SOLE 0 32,124 0 39,107
Coach, Inc. COMMON 189754104 6,632 189,364 SH   SOLE 0 81,165 0 108,199
Contango Oil & Gas Co. COMMON 21075N204 34,814 3,727,380 SH   SOLE 0 3,290,789 0 436,591
Core Laboratories N.V. COMMON N22717107 32,932 274,344 SH   SOLE 0 170,901 0 103,443
Costco Wholesale Corp. COMMON 22160K105 26,717 166,868 SH   SOLE 0 67,443 0 99,425
Cowen Group, Inc. COMMON 223622606 43,000 2,774,161 SH   SOLE 0 2,114,275 0 659,886
CPI Aerostructures, Inc. COMMON 125919308 13,205 1,427,538 SH   SOLE 0 830,362 0 597,176
CRA International, Inc. COMMON 12618T105 6,303 172,200 SH   SOLE 0 172,200 0 0
Crown Crafts, Inc. COMMON 228309100 3,138 404,862 SH   SOLE 0 237,285 0 167,577
Cumberland Pharmaceuticals, Inc. COMMON 230770109 10,035 1,824,580 SH   SOLE 0 1,067,080 0 757,500
CVS Health Corp. COMMON 126650100 2,643 33,499 SH   SOLE 0 33,499 0 0
DeVry Education Group Inc. COMMON 251893103 68,279 2,188,443 SH   SOLE 0 2,038,528 0 149,915
Digi International Inc. COMMON 253798102 4,005 291,292 SH   SOLE 0 291,292 0 0
Discover Financial Services COMMON 254709108 1,511 20,963 SH   SOLE 0 14 0 20,949
Dover Motorsports, Inc. COMMON 260174107 4,021 1,748,083 SH   SOLE 0 1,021,407 0 726,676
Dun & Bradstreet Corp. COMMON 26483E100 94,355 777,739 SH   SOLE 0 708,974 0 68,765
Edgewater Technology Inc. COMMON 280358102 13,225 1,763,320 SH   SOLE 0 1,032,230 0 731,090
Electro Scientific Industries, Inc. COMMON 285229100 3,147 531,547 SH   SOLE 0 531,547 0 0
Emcore Corporation COMMON 290846203 5,290 608,030 SH   SOLE 0 351,130 0 256,900
EOG Resources Inc. COMMON 26875P101 16,783 166,000 SH   SOLE 0 122,146 0 43,854
Exxon Mobil Corp. COMMON 30231G102 6,022 66,717 SH   SOLE 0 66,717 0 0
Factset Research Systems, Inc. COMMON 303075105 3,827 23,417 SH   SOLE 0 10,677 0 12,740
Fair Isaac Corp. COMMON 303250104 45,851 384,588 SH   SOLE 0 338,393 0 46,195
First American Financial Corp. COMMON 31847R102 201,902 5,511,941 SH   SOLE 0 5,228,663 0 283,278
Fluor Corp. COMMON 343412102 22,913 436,266 SH   SOLE 0 174,135 0 262,131
Franklin Resources, Inc. COMMON 354613101 60,206 1,521,120 SH   SOLE 0 1,515,427 0 5,693
FutureFuel Corp. COMMON 36116M106 3,909 281,200 SH   SOLE 0 281,200 0 0
Gaia, Inc. COMMON 36269P104 9,704 1,121,833 SH   SOLE 0 1,121,833 0 0
Gilead Sciences, Inc. COMMON 375558103 113,444 1,584,199 SH   SOLE 0 662,609 0 921,590
GlaxoSmithKline plc ADR ADR 37733W105 63,393 1,646,146 SH   SOLE 0 979,354 0 666,792
Glu Mobile Inc. COMMON 379890106 5,342 2,753,700 SH   SOLE 0 2,753,700 0 0
Goldman Sachs Group, Inc. COMMON 38141G104 6,836 28,548 SH   SOLE 0 28,548 0 0
Graham Holdings Co. COMMON 384637104 12,425 24,270 SH   SOLE 0 22,573 0 1,697
Green Brick Partners Inc. COMMON 392709101 3,966 394,600 SH   SOLE 0 394,600 0 0
GSI Technology Inc. COMMON 36241U106 9,092 1,466,426 SH   SOLE 0 1,171,516 0 294,910
Gulf Island Fabrication, Inc. COMMON 402307102 7,899 663,771 SH   SOLE 0 663,771 0 0
Hanger, Inc. COMMON 41043F208 4,496 390,999 SH   SOLE 0 390,999 0 0
Hardinge Inc. COMMON 412324303 5,392 486,609 SH   SOLE 0 278,592 0 208,017
Harman Intl Industries, Inc. COMMON 413086109 115,170 1,036,078 SH   SOLE 0 503,885 0 532,193
Harris & Harris Group, Inc. COMMON 413833104 7,290 5,282,791 SH   SOLE 0 3,089,862 0 2,192,929
Horace Mann Educators Corp. COMMON 440327104 14,852 347,021 SH   SOLE 0 297,616 0 49,405
Houlihan Lokey, Inc. COMMON 441593100 32,519 1,044,970 SH   SOLE 0 1,037,297 0 7,673
IDEX Corp. COMMON 45167R104 19,181 212,984 SH   SOLE 0 183,066 0 29,918
Illinois Tool Works Inc. COMMON 452308109 92,375 754,329 SH   SOLE 0 751,486 0 2,843
Imation Corp. COMMON 45245A107 6,600 8,049,085 SH   SOLE 0 6,011,772 0 2,037,313
Interface, Inc. COMMON 458665304 14,030 756,357 SH   SOLE 0 646,682 0 109,675
International Business Machines Corp. COMMON 459200101 8,746 52,688 SH   SOLE 0 52,688 0 0
International Speedway Corp. COMMON 460335201 128,189 3,483,402 SH   SOLE 0 3,226,780 0 256,622
Interpublic Group of Cos., Inc. COMMON 460690100 178,842 7,639,560 SH   SOLE 0 7,305,850 0 333,710
iShares MSCI ACWI ex US ETF ETF 464288240 11,137 276,560 SH   SOLE 0 41,169 0 235,391
iShares MSCI Switzerland Capped ETF ETF 464286749 1,545 52,452 SH   SOLE 0 52,452 0 0
iShares MSCI United Kingdom Index ETF ETF 46435G334 514 16,751 SH   SOLE 0 0 0 16,751
IShares Russell 2000 Value ETF 464287630 8,503 71,494 SH   SOLE 0 71,494 0 0
iShares Russell Microcap Index ETF ETF 464288869 1,082 12,602 SH   SOLE 0 12,602 0 0
iShares Russell 2000 Index ETF ETF 464287655 1,260 9,341 SH   SOLE 0 9,341 0 0
Itau Unibanco Holding SA ADR ADR 465562106 298 29,023 SH   SOLE 0 11,732 0 17,291
J.M. Smucker Co. COMMON 832696405 138,789 1,083,778 SH   SOLE 0 1,038,493 0 45,285
Janus Capital Group Inc. COMMON 47102X105 87,308 6,579,350 SH   SOLE 0 5,887,983 0 691,367
JLL COMMON 48020Q107 157,059 1,554,422 SH   SOLE 0 1,441,944 0 112,478
Johnson & Johnson COMMON 478160104 100,274 870,359 SH   SOLE 0 391,172 0 479,187
JPMorgan Chase & Co. COMMON 46625H100 7,065 81,873 SH   SOLE 0 81,873 0 0
Kennametal Inc. COMMON 489170100 227,692 7,283,818 SH   SOLE 0 6,830,679 0 453,139
Keysight Technologies, Inc. COMMON 49338L103 121,413 3,320,024 SH   SOLE 0 3,107,816 0 212,208
Kindred Biosciences, Inc. COMMON 494577109 16,749 3,940,859 SH   SOLE 0 3,064,615 0 876,244
KKR & Co. L.P. COMMON 48248M102 159,401 10,357,455 SH   SOLE 0 10,344,385 0 13,070
Laboratory Corp. of America Holdings COMMON 50540R409 188,762 1,470,340 SH   SOLE 0 1,415,991 0 54,349
Landec Corp. COMMON 514766104 10,970 794,934 SH   SOLE 0 615,885 0 179,049
Lazard Ltd. COMMON G54050102 266,402 6,483,375 SH   SOLE 0 6,110,942 0 372,433
Littelfuse, Inc. COMMON 537008104 69,056 455,005 SH   SOLE 0 424,160 0 30,845
Lockheed Martin Corp. COMMON 539830109 8,184 32,745 SH   SOLE 0 32,745 0 0
Lumber Liquidators Holdings, Inc. COMMON 55003T107 7,356 467,375 SH   SOLE 0 403,450 0 63,925
Manning & Napier, Inc. COMMON 56382Q102 9,898 1,311,025 SH   SOLE 0 1,112,785 0 198,240
Mattel, Inc. COMMON 577081102 122,888 4,460,539 SH   SOLE 0 4,269,298 0 191,241
Matthews Intl Corp. COMMON 577128101 16,785 218,418 SH   SOLE 0 188,693 0 29,725
MB Financial, Inc. COMMON 55264U108 5,309 112,400 SH   SOLE 0 112,400 0 0
Meredith Corp. COMMON 589433101 103,653 1,752,372 SH   SOLE 0 1,580,899 0 171,473
Microsoft Corp. COMMON 594918104 158,366 2,548,541 SH   SOLE 0 1,150,970 0 1,397,571
Mitcham Industries, Inc. COMMON 606501104 12,177 2,934,110 SH   SOLE 0 2,338,029 0 596,081
Mohawk Industries, Inc. COMMON 608190104 54,818 274,530 SH   SOLE 0 248,673 0 25,857
Morgan Stanley COMMON 617446448 4,930 116,692 SH   SOLE 0 116,692 0 0
Mosaic Co. COMMON 61945C103 6,537 222,885 SH   SOLE 0 222,885 0 0
Movado Group Inc. COMMON 624580106 4,968 172,800 SH   SOLE 0 172,800 0 0
MSG Networks, Inc. COMMON 553573106 140,721 6,545,162 SH   SOLE 0 6,097,373 0 447,789
MTS Systems Corp. COMMON 553777103 101,582 1,791,564 SH   SOLE 0 1,624,231 0 167,333
National Oilwell Varco COMMON 637071101 65,182 1,740,985 SH   SOLE 0 1,735,097 0 5,888
Nippon Telegraph & Telephone ADR ADR 654624105 1,737 41,287 SH   SOLE 0 32,045 0 9,242
Nokia Corp. ADR ADR 654902204 128,535 26,722,490 SH   SOLE 0 16,264,406 0 10,458,084
Nordstrom, Inc. COMMON 655664100 41,121 857,949 SH   SOLE 0 851,134 0 6,815
Northern Trust Corp. COMMON 665859104 191,498 2,150,452 SH   SOLE 0 2,084,679 0 65,773
Novartis AG ADR ADR 66987V109 1,122 15,402 SH   SOLE 0 12,653 0 2,749
NTT Docomo Inc. ADR ADR 62942M201 526 23,127 SH   SOLE 0 23,127 0 0
Occidental Petroleum Corp. COMMON 674599105 4,389 61,614 SH   SOLE 0 25,763 0 35,851
Omnicom Group Inc. COMMON 681919106 95,127 1,117,699 SH   SOLE 0 1,113,538 0 4,161
Oracle Corp. COMMON 68389X105 7,855 204,295 SH   SOLE 0 204,295 0 0
ORBCOMM, Inc. COMMON 68555P100 30,660 3,707,403 SH   SOLE 0 2,873,745 0 833,658
Orion Energy Systems, Inc. COMMON 686275108 11,204 5,163,080 SH   SOLE 0 3,960,153 0 1,202,927
PCTEL, Inc. COMMON 69325Q105 17,084 3,175,424 SH   SOLE 0 2,368,018 0 807,406
Pendrell Corp. COMMON 70686R302 21,938 3,250,012 SH   SOLE 0 2,528,306 0 721,706
Perceptron, Inc. COMMON 71361F100 11,572 1,742,706 SH   SOLE 0 1,026,205 0 716,501
Philip Morris Intl, Inc. COMMON 718172109 80,192 876,515 SH   SOLE 0 478,722 0 397,793
PPG Industries COMMON 693506107 1,148 12,113 SH   SOLE 0 5,123 0 6,990
Progressive Corp. COMMON 743315103 60,217 1,696,257 SH   SOLE 0 1,687,273 0 8,984
Quest Diagnostics Inc. COMMON 74834L100 34,176 371,880 SH   SOLE 0 157,815 0 214,065
Qumu Corp. COMMON 749063103 3,606 1,514,922 SH   SOLE 0 889,963 0 624,959
RealNetworks, Inc. COMMON 75605L708 33,670 6,927,952 SH   SOLE 0 5,364,852 0 1,563,100
Rentech, Inc. COMMON 760112201 5,635 2,272,066 SH   SOLE 0 1,318,256 0 953,810
Richardson Electronics, Ltd. COMMON 763165107 5,498 872,699 SH   SOLE 0 515,859 0 356,840
Rosetta Stone Inc. COMMON 777780107 44,598 5,005,395 SH   SOLE 0 3,950,395 0 1,055,000
Royal Caribbean Cruises Ltd. COMMON V7780T103 86,359 1,052,646 SH   SOLE 0 963,824 0 88,822
Rubicon Technology, Inc. COMMON 78112T107 1,951 3,251,726 SH   SOLE 0 1,899,644 0 1,352,082
Ryanair Holdings plc ADR ADR 783513203 6,524 78,351 SH   SOLE 0 64,988 0 13,363
Santander Mexico Financial Group ADR ADR 40053C105 4,207 585,081 SH   SOLE 0 239,724 0 345,357
Schlumberger Ltd. COMMON 806857108 25,092 298,888 SH   SOLE 0 115,153 0 183,735
SeaChange Intl, Inc. COMMON 811699107 9,504 4,132,278 SH   SOLE 0 3,074,056 0 1,058,222
Sempra Energy COMMON 816851109 23,283 231,354 SH   SOLE 0 98,204 0 133,150
Simpson Manufacturing Co., Inc. COMMON 829073105 83,265 1,903,201 SH   SOLE 0 1,699,340 0 203,861
Snap-On Inc. COMMON 833034101 117,177 684,163 SH   SOLE 0 654,816 0 29,347
Sotheby's COMMON 835898107 23,287 584,214 SH   SOLE 0 507,997 0 76,217
Southern Co. COMMON 842587107 27,852 566,215 SH   SOLE 0 237,340 0 328,875
Spartan Motors Inc. COMMON 846819100 14,364 1,552,876 SH   SOLE 0 1,191,543 0 361,333
Stanley Black & Decker, Inc. COMMON 854502101 110,763 965,758 SH   SOLE 0 962,957 0 2,801
Strattec Security Corp. COMMON 863111100 6,117 151,797 SH   SOLE 0 151,797 0 0
Superior Industries Intl, Inc. COMMON 868168105 5,733 217,559 SH   SOLE 0 217,559 0 0
T. Rowe Price Group, Inc. COMMON 74144T108 21,762 289,155 SH   SOLE 0 288,080 0 1,075
Team, Inc. COMMON 878155100 68,628 1,748,481 SH   SOLE 0 1,502,936 0 245,545
TechTarget, Inc. COMMON 87874R100 7,365 863,470 SH   SOLE 0 863,470 0 0
TEGNA, Inc. COMMON 87901J105 135,848 6,351,002 SH   SOLE 0 5,917,828 0 433,174
Telenav Inc. COMMON 879455103 28,289 4,012,661 SH   SOLE 0 3,038,591 0 974,070
Tenaris ADR ADR 88031M109 9,643 270,030 SH   SOLE 0 226,884 0 43,146
The Madison Square Garden Co. COMMON 55825T103 78,351 456,825 SH   SOLE 0 418,782 0 38,043
Thermo Fisher Scientific Inc. COMMON 883556102 68,226 483,526 SH   SOLE 0 481,616 0 1,910
Tiffany & Co. COMMON 886547108 54,478 703,583 SH   SOLE 0 701,248 0 2,335
Toyota Motor Corp. ADR ADR 892331307 669 5,708 SH   SOLE 0 5,708 0 0
Tractor Supply COMMON 892356106 1,274 16,802 SH   SOLE 0 7,103 0 9,699
U.S. Bancorp COMMON 902973304 17,456 339,811 SH   SOLE 0 144,508 0 195,303
U.S. Silica Holdings, Inc. COMMON 90346E103 67,750 1,195,314 SH   SOLE 0 1,117,816 0 77,498
Vanguard FTSE Developed ETF ETF 921943858 24,034 657,739 SH   SOLE 0 638,904 0 18,835
Vanguard S&P 500 ETF ETF 922908363 4,371 21,290 SH   SOLE 0 0 0 21,290
Vanguard Total World Stock Index Fd ETF ETF 922042742 7,867 128,969 SH   SOLE 0 52,369 0 76,600
Varian Medical Systems Inc. COMMON 92220P105 1,805 20,100 SH   SOLE 0 6,508 0 13,592
Verizon Communications Inc. COMMON 92343V104 43,183 808,974 SH   SOLE 0 343,205 0 465,769
Versar Inc. COMMON 925297103 2,419 1,765,373 SH   SOLE 0 1,032,735 0 732,638
Viacom, Inc. COMMON 92553P201 129,651 3,693,761 SH   SOLE 0 3,522,966 0 170,795
Vical Inc. COMMON 925602203 1,075 467,544 SH   SOLE 0 277,079 0 190,465
West Marine, Inc. COMMON 954235107 5,781 552,196 SH   SOLE 0 552,196 0 0
Western Union Co. COMMON 959802109 129,365 5,956,053 SH   SOLE 0 5,748,768 0 207,285
Willis Towers Watson plc COMMON G96629103 50,037 409,202 SH   SOLE 0 407,479 0 1,723
XO Group Inc. COMMON 983772104 22,177 1,140,218 SH   SOLE 0 869,241 0 270,977
Zebra Technologies Corp. COMMON 989207105 183,512 2,139,837 SH   SOLE 0 1,949,437 0 190,400
Zimmer Biomet Holdings, Inc. COMMON 98956P102 116,570 1,129,553 SH   SOLE 0 1,125,594 0 3,959