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Stockholders' Equity (Details) (USD $)
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1 Months Ended | 12 Months Ended | |||
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May 14, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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May 11, 2012
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Nov. 10, 2006
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| Stockholders' Equity (Textual) [Abstract] | |||||
| Stock authorized to be repurchased under share repurchase program | 4,000,000 | 1,000,000 | |||
| Repurchased shares | 2,774,250 | 2,774,250 | 10,124 | ||
| Repurchase of Common Stock Authorized Remaining | 1,225,750 | ||||
| Aggregate purchase price of repurchased shares | $ 66,638,000 | $ 66,638,000 | |||
| Share repurchased per share price | $ 24.02 | $ 24.02 | |||
| Share repurchased, percentage of outstanding shares | 11.80% | ||||
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- Definition
Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
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- Definition
The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
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- Definition
Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Share repurchased percentage of outstanding stock. No definition available.
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- Details
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