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Common Stock (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2012
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Dec. 23, 2009
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| Common Stock [Abstract] | ||
| Number of shares purchased and retired | 70,028 | |
| Cost of shares repurchased and retired | $ 758,000 | |
| Remaining number of shares authorized to be repurchased | 411,910 | |
| Number of rights distributed for each share of common stock | 1 | |
| Number of securities into which each right may be converted | 0.01 | |
| Exercise price of right | 41 | |
| Percentage of common stock required to be purchased for rights to become exercisable | 16.50% |
| X | ||||||||||
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- Definition
Class of Warrant or Right, Number of Rights Distributed by Securities No definition available.
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- Definition
Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. No definition available.
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- Definition
Percentage of common stock required to be purchased for rights to become exercisable No definition available.
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- Definition
The exercise price of each class of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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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
Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the par value method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares of common and preferred stock retired from treasury during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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