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v3.21.1

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Common Stock | Additional Paid In Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Total
--- | --- | --- | --- | --- | ---
Balance at the beginning of the period at Dec. 31, 2019 | $ 32.2 | $ 306.2 | $ (36.9) | $ 504.2 | $ 805.7
Balance (in shares) at Dec. 31, 2019 | 42.9 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net income |  |  |  | 3.8 | 3.8
Other comprehensive loss, net of tax |  |  | (0.6) |  | (0.6)
Share-based compensation |  | 3.1 |  |  | 3.1
Shares issued, net of shares withheld for employee taxes | $ 0.1 | (4.6) |  |  | (4.5)
Shares issued, net of shares withheld for employee taxes (in shares) | 0.1 |  |  |  |
Equity interest in SSAT |  |  |  | 2.2 | 2.2
Dividends |  |  |  | (9.5) | (9.5)
Balance at the end of the period at Mar. 31, 2020 | $ 32.3 | 304.7 | (37.5) | 500.7 | 800.2
Balance (in shares) at Mar. 31, 2020 | 43.0 |  |  |  |
Balance at the beginning of the period at Dec. 31, 2020 | $ 32.4 | 321.5 | (50.8) | 658.1 | 961.2
Balance (in shares) at Dec. 31, 2020 | 43.2 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net income |  |  |  | 87.2 | 87.2
Other comprehensive loss, net of tax |  |  | (0.1) |  | (0.1)
Share-based compensation |  | 4.8 |  |  | 4.8
Shares issued, net of shares withheld for employee taxes | $ 0.2 | (14.3) |  |  | (14.1)
Shares issued, net of shares withheld for employee taxes (in shares) | 0.2 |  |  |  |
Dividends |  |  |  | (10.1) | (10.1)
Balance at the end of the period at Mar. 31, 2021 | $ 32.6 | $ 312.0 | $ (50.9) | $ 735.2 | $ 1,028.9
Balance (in shares) at Mar. 31, 2021 | 43.4 |  |  |  |

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