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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Statement of Stockholders' Equity [Abstract] | |||
| Stock-based compensation expense, excess tax benefits | $ 259,890 | $ 2,725,533 | $ 2,010,221 |
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- Definition
The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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