In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-05-18 | Dec-31-17 | Dec-05-17 |
| 10-K | 10-K | 10-K | 10-K | 10-K | 8-K | 10-K | 8-K |
Net income | 22.0 | 32.9 | 26.5 | 16.9 | 12.8 | 12.8 | 8.1 | 8.1 |
Depreciation and amortization [+] | 4.6 | 5.3 | 6.6 | 5.5 | 3.6 | | 3.3 | |
Depreciation | 3.5 | 4.0 | 5.0 | 4.0 | 3.4 | 0.3 | 3.2 | 0.1 |
Amortization | 1.1 | 1.3 | 1.6 | 1.6 | 0.3 | | 0.1 | |
Asset impairment charges | 1.3 | | 0.7 | | | | | |
Stock-based compensation | 2.2 | 1.9 | 2.1 | 1.6 | 1.5 | | 1.4 | |
Deferred taxes | -0.6 | 0.9 | -2.0 | 1.8 | 0.5 | | 3.1 | |
Change in working capital | 4.7 | 1.9 | -1.9 | -4.0 | 1.8 | | -0.4 | |
Other | 4.7 | 1.9 | -1.9 | -4.0 | 1.8 | | -0.4 | |
Other operating activities | 2.0 | -2.1 | -1.7 | -12.7 | 2.2 | | 0.9 | |
Cash from operations | 36.2 | 40.8 | 30.2 | 9.1 | 22.5 | | 16.4 | |
|
Capital expenditures | -0.9 | -1.3 | -1.3 | -2.9 | -4.8 | | -2.7 | |
Purchases of property and equipment | -0.9 | -1.3 | -1.3 | -2.9 | -4.8 | | -2.7 | |
Purchases of short-term investments, net | -100.1 | -6.9 | 29.5 | 42.2 | -51.3 | | -12.6 | |
Purchases of short-term investments | -181.5 | -195.0 | -26.7 | -190.5 | -226.0 | | -203.7 | |
Sales of short-term investments | 81.4 | 188.1 | 56.2 | 232.7 | 174.7 | | 191.1 | |
Other cash from investing | -170.0 | 6.2 | -320.8 | -20.8 | -83.3 | | -130.6 | |
Cash from investing | -271.0 | -2.0 | -292.6 | 18.5 | -139.4 | | -145.9 | |
|
Cash dividends paid | -8.3 | -8.3 | -7.6 | -6.2 | -4.4 | | -3.5 | |
Repurchase of common stock, net | -14.2 | -1.9 | -1.2 | | | | | |
Financing costs | | | | -0.1 | | | | |
Other cash from financing | 109.3 | 54.8 | 340.5 | -54.3 | 180.3 | | 132.6 | |
Cash from financing | 86.9 | 44.7 | 331.7 | -60.4 | 175.9 | | 129.1 | |
|
Free cash flow | 35.3 | 39.6 | 28.9 | 6.2 | 17.7 | | 13.7 | |
Per share (diluted) | $3.30 | $3.56 | $2.62 | $0.59 | $2.07 | | $1.67 | |
|
Cash paid for interest | 8.7 | 6.8 | 16.7 | 24.3 | 12.9 | | 7.6 | |