v2.4.0.8

Stockholders' Equity , Share Repurchase Program (Details) (USD $) | 0 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 06, 2013 | Dec. 31, 2013 | Dec. 31, 2009
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Stock repurchase program, authorized amount | $ 200,000,000 |  |
Stock repurchased in the period, shares |  | 2,100,000 | 1,409,264
Stock repurchased in the period, value |  | 38,949,000 |
Remaining authorized repurchase amount under the program |  | $ 161,100,000 |

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