UNITED STATES

SECURITIES AND EXCHANGE
COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Laurie Smiley, Esq.

Matthew S. Topham, Esq.

Irene Song, Esq.

Preston Gates & Ellis LLP

Cascade Investment, L.L.C.

925 Fourth Avenue, Suite 2900

2365 Carillon Point

Seattle, Washington 98104

Kirkland, WA 98033

(206) 623-7580

(425) 889-7900

Item 5.

Interest in Securities of the Issuer

(a)  See items 11 and 13 of the cover pages to this Schedule 13D for the aggregate number of shares and percentage of Common Stock beneficially owned by each of the Reporting Persons.

According to the Issuer, as of June 30, 2006, there were 7,509,058 shares of Common Stock issued and outstanding. As of the filing date of this Schedule 13D, Cascade beneficially owns 961,538 shares of Common Stock issuable upon conversion of a promissory note issued by the Issuer to Cascade (the “Note”), which represents approximately 11.4% of the shares of Common Stock currently issued and outstanding, including the shares of Common Stock issuable upon conversion of the Note. All shares held by Cascade may be deemed to be beneficially owned by Gates as the sole member of Cascade.

(b)  See items 7 through 10 of the cover pages to this Schedule 13D for the number of shares of Common Stock beneficially owned by each of the Reporting Persons as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote and sole or shared power to dispose or to direct the disposition.

As of the filing date of this Schedule 13D, if Cascade converted the Note, Cascade (and Gates, as the sole member of Cascade) would have sole power to vote or direct the vote and dispose or direct the disposition of 961,538 shares of Common Stock.

(c)  Except as set forth in this Schedule 13D, none of the Reporting Persons, nor, to the knowledge of the Reporting Persons, any of the persons listed on Exhibit 99.1, (i) beneficially owns any shares of Common Stock, or (ii) have effected any transaction in Common Stock during the past 60 days.

(d)  Except as set forth in this Schedule 13D, to the knowledge of the Reporting Persons, no person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, securities covered by this Schedule 13D.

(e)  Not applicable.

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

Except as described in this Item 6, none of the Reporting Persons has any contracts, arrangements, understandings, or relationships (legal or otherwise) with respect to any securities of the Issuer.

On June 30, 2006, Cascade, the Issuer, Mario J. Gabelli, Gabelli Group Capital Partners, Inc., Rye Holdings, Inc., and Rye Capital Partners, Inc., entered into a Fourth Amendment to the Note Purchase Agreement that was originally entered into among such parties as of August 10, 2001, and was previously amended on July 1, 2003, August 4, 2004 and February 28, 2005. Pursuant to the Fourth Amendment to the Note Purchase Agreement, (i) the date on which Cascade can elect to cause the Issuer to purchase all or any portion of the unpaid principal amount of the Note was changed from September 15, 2006 to May 15, 2007 and (ii) from and after September 15, 2006, the interest rate on the Note shall increase from 5% to 6%, the conversion price per share shall increase from $52 to $53 and the Issuer shall have the right to redeem the Note, in whole but not in part, at 101% of its principal amount together with all accrued but unpaid interest thereon upon at least 30 days’ prior written notice (collectively, the “Note Amendments”).

Concurrently with the execution and delivery of the Fourth Amendment to the Note Purchase Agreement, the Issuer delivered to Cascade, in exchange for the duly executed outstanding Note, a duly executed amended Note which is identical to the previously outstanding Note in all respects except that it gives effect to the Note Amendments. In addition, concurrently with the execution and delivery of the Fourth Amendment to the Note Purchase Agreement, the Issuer delivered to Cascade an amendment to the letter of credit that secures Cascade’s right to put the Note to the Issuer. The amendment to the letter of credit (1) extends the expiration date of the letter of credit until May 22, 2007 and (2) increases the letter of credit amount so that the aggregate amount available thereunder shall not exceed $51,500,000.

The descriptions of the Fourth Amendment to the Note Purchase Agreement and the amended Note throughout this Schedule 13D are qualified by reference to such Fourth Amendment to the Note Purchase Agreement and the amended Note, copies of which are filed as Exhibits 99.7 and 99.8 hereto and are incorporated herein by reference.

Item 7.

Material to Be Filed as Exhibits

Exhibit

Description

99.1

List of each executive officer, director or person controlling Cascade Investment, L.L.C. (incorporated herein by reference to Exhibit A of Cascade’s Amendment No. 3 to Schedule 13D, filed with the SEC on March 27, 2006)

99.2

Note Purchase Agreement, dated as of August 10, 2001, by and among Cascade Investment, L.L.C., GAMCO Investors, Inc., Mario J. Gabelli, Gabelli Group Capital Partners, Inc., Rye Holdings, Inc., and Rye Capital Partners, Inc. (incorporated herein by reference to Exhibit 99.2 of Cascade’s Schedule 13D, filed with the SEC on August 23, 2001)

99.3

Registration Rights Agreement dated August 14, 2001, between GAMCO Investors, Inc. and Cascade Investment, L.L.C. (incorporated herein by reference to Exhibit 99.4 of Cascade’s Schedule 13D, filed with the SEC on August 23, 2001)

99.4

First Amendment, dated as of July 1, 2003, to the Note Purchase Agreement, by and among Cascade Investment, L.L.C., GAMCO Investors, Inc., Mario J. Gabelli, Gabelli Group Capital Partners, Inc., Rye Holdings, Inc. and Rye Capital Partners, Inc. (incorporated herein by reference to Exhibit 4.1 to the Issuer’s Form 10-Q for the quarter ended June 30, 2003, filed with the SEC on August 14, 2003).

99.5

Second Amendment, dated as of August 4, 2004, to the Note Purchase Agreement, by and among Cascade Investment, L.L.C., GAMCO Investors, Inc., Mario J. Gabelli, Gabelli Group Capital Partners, Inc., Rye Holdings, Inc. and Rye Capital Partners, Inc. (incorporated herein by reference to Exhibit 4.1 to the Issuer’s Form 10-Q for the quarter ended June 30, 2004, filed with the SEC on August 9, 2004).

99.6

Third Amendment, dated as of February 28, 2005, to the Note Purchase Agreement, by and among Cascade Investment, L.L.C., GAMCO Investors, Inc., Mario J. Gabelli, Gabelli Group Capital Partners, Inc., Rye Holdings, Inc. and Rye Capital Partners, Inc. (incorporated herein by reference to Exhibit 99.2 to the Issuer’s Form 8-K, filed with the SEC on March 2, 2005).

99.7

Fourth Amendment, dated as of June 30, 2006, to the Note Purchase Agreement, by and among Cascade Investment, L.L.C., GAMCO Investors, Inc., Mario J. Gabelli, Gabelli Group Capital Partners, Inc., Rye Holdings, Inc. and Rye Capital Partners, Inc. (incorporated herein by reference to Exhibit 99.1 to the Issuer’s Form 8-K, filed with the SEC on June 30, 2006).

99.8

Convertible Promissory Note issued by GAMCO Investors, Inc. to Cascade Investment, L.L.C. (incorporated herein by reference to Exhibit 99.2 to the Issuer’s Form 8-K, filed with the SEC on June 30, 2006).

Dated: July 6, 2006

CASCADE INVESTMENT, L.L.C.*

By:

/s/ Michael Larson              

Name: Michael Larson

Title:    Business Manager

WILLIAM H. GATES III*

By:

/s/ Michael Larson

Name: Michael Larson**

Title:    Attorney-in-fact