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Consolidated Statements of Changes in Stockholders' Equity (USD $) In Millions, except Share data, unless otherwise specified | Total | Common Stock Issued [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 524.2 | $ 3.8 | $ 208.8 | $ (24.4) | $ 334.5 | $ 1.5
Balance (in shares) at Dec. 31, 2010 |  | 37,442,948 |  | 1,387,142 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 92.6 |  |  |  | 92.6 |
Other comprehensive income (loss), net of tax | (26.0) |  |  |  |  | (26.0)
Dividends declared | (10.1) |  |  |  | (10.1) |
Restricted stock issuances, net (in shares) |  |  |  | (647,120) |  |
Restricted stock issuances, net | 0 |  | (13.2) | 13.2 |  |
Stock-based employee compensation expense | 3.8 |  | 3.8 |  |  |
Excess tax benefits of stock-based employee compensation | 10.0 |  | 10.0 |  |  |
Stock issued to directors as compensation (in shares) |  | 4,276 |  |  |  |
Stock issued to directors as compensation | 0.1 |  | 0.1 |  |  |
Issuance of shares for options exercised (in shares) |  | 140,074 |  |  |  |
Issuance of shares for options exercised | 2.2 |  | 2.2 |  |  |
Purchases of treasury stock (in shares) |  |  |  | 4,480,392 |  |
Purchases of treasury stock | (120.9) |  |  | (120.9) |  |
Balance at Dec. 31, 2011 | 475.9 | 3.8 | 211.7 | (132.1) | 417.0 | (24.5)
Balance (in shares) at Dec. 31, 2011 |  | 37,587,298 |  | 5,220,414 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 79.8 |  |  |  | 79.8 |
Other comprehensive income (loss), net of tax | 9.1 |  |  |  |  | 9.1
Dividends declared | (14.1) |  |  |  | (14.1) |
Restricted stock issuances, net (in shares) |  |  |  | (137,026) |  |
Restricted stock issuances, net | 0 |  | (3.4) | 3.4 |  |
Stock-based employee compensation expense | 6.9 |  | 6.9 |  |  |
Excess tax benefits of stock-based employee compensation | 1.4 |  | 1.4 |  |  |
Stock issued to directors as compensation (in shares) |  | 1,778 |  |  |  |
Stock issued to directors as compensation | 0 |  | 0 |  |  |
Issuance of shares for options exercised (in shares) |  | 176,900 |  | 0 |  |
Issuance of shares for options exercised | 2.8 |  | 2.8 |  |  |
Share reissuance and cancellation to fulfill stock split (in shares) |  | (6,556,110) |  | (6,556,110) |  |
Share reissuance and cancellation to fulfill stock split | 0 | (0.7) | (178.4) | 178.4 | 0.7 |
Purchases of treasury stock (in shares) |  |  |  | 1,481,482 |  |
Purchases of treasury stock | (50.0) |  |  | (50.0) |  |
Balance at Dec. 31, 2012 | 511.8 | 3.1 | 41.0 | (0.3) | 483.4 | (15.4)
Balance (in shares) at Dec. 31, 2012 |  | 31,209,866 |  | 8,760 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 76.1 |  |  |  | 76.1 |
Other comprehensive income (loss), net of tax | 10.4 |  |  |  |  | 10.4
Dividends declared | (39.5) |  |  |  | (39.5) |
Restricted stock issuances, net (in shares) |  | (226,461) |  | (5,000) |  |
Restricted stock issuances, net | 0 |  | (0.2) | 0.2 |  |
Stock-based employee compensation expense | 3.2 |  | 3.2 |  |  |
Excess tax benefits of stock-based employee compensation | 0.5 |  | 0.5 |  |  |
Stock issued to directors as compensation (in shares) |  | 1,318 |  |  |  |
Stock issued to directors as compensation | 0.1 |  | 0.1 |  |  |
Issuance of shares for options exercised (in shares) |  | 33,000 |  |  |  |
Issuance of shares for options exercised | 0.5 |  | 0.5 |  |  |
Share cancellation (in shares) |  | (47,218) |  | (47,218) |  |
Share cancellation | 0 |  | (1.8) | 1.8 |  |
Purchases of treasury stock (in shares) |  |  |  | 43,458 |  |
Purchases of treasury stock | (1.7) |  |  | (1.7) |  |
Balance at Dec. 31, 2013 | $ 561.4 | $ 3.1 | $ 43.3 | $ 0 | $ 520.0 | $ (5.0)
Balance (in shares) at Dec. 31, 2013 |  | 31,423,427 |  | 0 |  |

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