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Statements of Consolidated Stockholders' Equity (Unaudited) - USD ($) $ in Millions | Total | Common Stock | Additional Paid in Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | ---
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Cumulative-effect adjustment |  | $ 10.1 |  |  | $ 10.5 | $ 0.0 | $ (0.4)
Adjusted balance |  | $ 756.4 | $ 0.2 | $ 1,055.9 | 96.0 | (358.6) | (37.1)
Common Stock, Dividends, Per Share, Declared |  | $ 0.55 |  |  |  |  |
Beginning balance (shares) at Dec. 31, 2017 |  |  | 16,773,586 |  |  |  |
Beginning balance at Dec. 31, 2017 |  | $ 746.3 | $ 0.2 | 1,055.9 | 85.5 | (358.6) | (36.7)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | 25.7 |  |  | 25.7 |  |
Other comprehensive income (loss), net of tax |  | (8.3) |  |  |  |  | (8.3)
Issuance of common shares to employees upon vesting of restricted stock units and performance shares (shares) |  |  | 135,134 |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares) |  |  | (68,029) |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | (6.9) |  | (6.9) |  |  |
Repurchase of common stock (shares) | [1] |  | (58,155) |  |  |  |
Repurchase of common stock1 | [1] | (6.1) |  |  |  | (6.1) |
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares2 | [2] | (10.0) |  |  | (10.0) |  |
Amortization of unearned equity compensation |  | 2.8 |  | 2.8 |  |  |
Ending balance (shares) at Mar. 31, 2018 |  |  | 16,782,536 |  |  |  |
Ending balance at Mar. 31, 2018 |  | 753.6 | $ 0.2 | 1,051.8 | 111.7 | (364.7) | (45.4)
Beginning balance (shares) at Dec. 31, 2017 |  |  | 16,773,586 |  |  |  |
Beginning balance at Dec. 31, 2017 |  | 746.3 | $ 0.2 | 1,055.9 | 85.5 | (358.6) | (36.7)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | 68.1 |  |  |  |  |
Ending balance (shares) at Sep. 30, 2018 |  |  | 16,547,237 |  |  |  |
Ending balance at Sep. 30, 2018 |  | $ 762.5 | $ 0.2 | 1,057.4 | 135.6 | (390.9) | (39.8)
Common Stock, Dividends, Per Share, Declared |  | $ 0.55 |  |  |  |  |
Beginning balance (shares) at Mar. 31, 2018 |  |  | 16,782,536 |  |  |  |
Beginning balance at Mar. 31, 2018 |  | $ 753.6 | $ 0.2 | 1,051.8 | 111.7 | (364.7) | (45.4)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | 20.7 |  |  | 20.7 |  |
Other comprehensive income (loss), net of tax |  | 6.4 |  |  |  |  | 6.4
Issuance of non-vested shares to non-employee directors (shares) |  |  | 9,009 |  |  |  |
Issuance of common shares to non-employee directors (shares) |  |  | 1,954 |  |  |  |
Issuance of common shares to non-employee directors |  | 0.2 |  | 0.2 |  |  |
Issuance of common shares to employees upon vesting of restricted stock units and performance shares (shares) |  |  | 82 |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares) |  |  | (95) |  |  |  |
Repurchase of common stock (shares) | [1] |  | (127,545) |  |  |  |
Repurchase of common stock1 | [1] | (13.3) |  |  |  | (13.3) |
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares2 | [2] | (9.3) |  |  | (9.3) |  |
Amortization of unearned equity compensation |  | 2.7 |  | 2.7 |  |  |
Ending balance (shares) at Jun. 30, 2018 |  |  | 16,665,941 |  |  |  |
Ending balance at Jun. 30, 2018 |  | $ 761.0 | $ 0.2 | 1,054.7 | 123.1 | (378.0) | (39.0)
Common Stock, Dividends, Per Share, Declared |  | $ 0.55 |  |  |  |  |
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | $ 21.7 |  |  | 21.7 |  |
Other comprehensive income (loss), net of tax |  | (0.8) |  |  |  |  | (0.8)
Issuance of common shares to employees upon vesting of restricted stock units and performance shares (shares) |  |  | 78 |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares) |  |  | (42) |  |  |  |
Repurchase of common stock (shares) | [1] |  | (118,740) |  |  |  |
Repurchase of common stock1 | [1] | (12.9) |  |  |  | (12.9) |
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares2 | [2] | (9.2) |  |  | (9.2) |  |
Amortization of unearned equity compensation |  | 2.7 |  | 2.7 |  |  |
Ending balance (shares) at Sep. 30, 2018 |  |  | 16,547,237 |  |  |  |
Ending balance at Sep. 30, 2018 |  | $ 762.5 | $ 0.2 | 1,057.4 | 135.6 | (390.9) | (39.8)
Common Stock, Dividends, Per Share, Declared |  | $ 0.60 |  |  |  |  |
Beginning balance (shares) at Dec. 31, 2018 |  | 16,234,603 | 16,234,603 |  |  |  |
Beginning balance at Dec. 31, 2018 |  | $ 740.4 | $ 0.2 | 1,059.3 | 150.2 | (420.5) | (48.8)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | 28.0 |  |  | 28.0 |  |
Other comprehensive income (loss), net of tax |  | 9.7 |  |  |  |  | 9.7
Issuance of common shares to employees upon vesting of restricted stock units and performance shares (shares) |  |  | 122,309 |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares) |  |  | (46,388) |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | (5.0) |  | (5.0) |  |  |
Repurchase of common stock (shares) | [3] |  | (175,977) |  |  |  |
Repurchase of common stock1 | [3] | (17.4) |  |  |  | (17.4) |
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares2 | [4] | (10.2) |  |  | (10.2) |  |
Amortization of unearned equity compensation |  | 2.4 |  | 2.4 |  |  |
Ending balance (shares) at Mar. 31, 2019 |  |  | 16,134,547 |  |  |  |
Ending balance at Mar. 31, 2019 |  | $ 747.9 | $ 0.2 | 1,056.7 | 168.0 | (437.9) | (39.1)
Beginning balance (shares) at Dec. 31, 2018 |  | 16,234,603 | 16,234,603 |  |  |  |
Beginning balance at Dec. 31, 2018 |  | $ 740.4 | $ 0.2 | 1,059.3 | 150.2 | (420.5) | (48.8)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | $ 72.6 |  |  |  |  |
Ending balance (shares) at Sep. 30, 2019 |  | 15,900,956 | 15,900,956 |  |  |  |
Ending balance at Sep. 30, 2019 |  | $ 751.4 | $ 0.2 | 1,061.5 | 193.0 | (460.1) | (43.2)
Common Stock, Dividends, Per Share, Declared |  | $ 0.60 |  |  |  |  |
Beginning balance (shares) at Mar. 31, 2019 |  |  | 16,134,547 |  |  |  |
Beginning balance at Mar. 31, 2019 |  | $ 747.9 | $ 0.2 | 1,056.7 | 168.0 | (437.9) | (39.1)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | 19.2 |  |  | 19.2 |  |
Other comprehensive income (loss), net of tax |  | (3.2) |  |  |  |  | (3.2)
Issuance of non-vested shares to non-employee directors (shares) |  |  | 11,850 |  |  |  |
Issuance of common shares to non-employee directors (shares) |  |  | 2,850 |  |  |  |
Issuance of common shares to non-employee directors |  | 0.3 |  | 0.3 |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (shares) |  |  | (12,395) |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | (1.2) |  | (1.2) |  |  |
Repurchase of common stock (shares) | [3] |  | (108,177) |  |  |  |
Repurchase of common stock1 | [3] | (10.2) |  |  |  | (10.2) |
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares2 | [4] | (9.9) |  |  | (9.9) |  |
Amortization of unearned equity compensation |  | 3.4 |  | 3.4 |  |  |
Ending balance (shares) at Jun. 30, 2019 |  |  | 16,028,675 |  |  |  |
Ending balance at Jun. 30, 2019 |  | 746.3 | $ 0.2 | 1,059.2 | 177.3 | (448.1) | (42.3)
Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income |  | 25.4 |  |  | 25.4 |  |
Other comprehensive income (loss), net of tax |  | (0.9) |  |  |  |  | (0.9)
Issuance of non-vested shares to non-employee directors (shares) |  |  | 896 |  |  |  |
Repurchase of common stock (shares) | [3] |  | (128,615) |  |  |  |
Repurchase of common stock1 | [3] | (12.0) |  |  |  | (12.0) |
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares2 | [4] | (9.7) |  |  | (9.7) |  |
Amortization of unearned equity compensation |  | $ 2.3 |  | 2.3 |  |  |
Ending balance (shares) at Sep. 30, 2019 |  | 15,900,956 | 15,900,956 |  |  |  |
Ending balance at Sep. 30, 2019 |  | $ 751.4 | $ 0.2 | $ 1,061.5 | $ 193.0 | $ (460.1) | $ (43.2)
[1] | Weighted-average repurchase price (dollars per share) for the quarters ended March 31, 2018, June 30, 2018 and September 30, 2018 was $104.50, $104.74 and $108.07, respectively.
[2] | Dividends declared per common share were $0.55 during each of the quarters ended March 31, 2018, June 30, 2018 and September 30, 2018.
[3] | Weighted-average repurchase price (dollars per share) for the quarters ended March 31, 2019, June 30, 2019 and September 30, 2019 was $98.55, $95.00 and $92.95, respectively. At September 30, 2019, $108.9 million remained available to repurchase our common shares pursuant to the stock repurchase program.
[4] | Dividends declared per common share were $0.60 during each of the quarters ended March 31, 2019, June 30, 2019 and September 30, 2019.

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