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Share-Based Compensation - Stock Options Granted Pursuant to Equity Incentive Plans (Detail) (USD $)
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3 Months Ended |
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Mar. 31, 2013
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| Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items] | |
| Outstanding, Shares, Beginning of Period | 52,696 |
| Granted, Shares | 0 |
| Exercised, Shares | 0 |
| Cancelled, Shares | 0 |
| Outstanding, Shares, End of Period | 52,696 |
| Exercisable, Shares | 52,696 |
| Outstanding, Weighted Average Exercise Price, Beginning of Period | $ 9.34 |
| Granted, Weighted Average Exercise Price | $ 0 |
| Exercised, Weighted Average Exercise Price | $ 0 |
| Cancelled, Weighted Average Exercise Price | $ 0 |
| Outstanding, Weighted Average Exercise Price, End of Period | $ 9.34 |
| Exercisable, Weighted Average Exercise Price | $ 9.34 |
| Outstanding, Weighted Average Remaining Contractual Term | 1 year |
| Exercisable, Weighted Average Remaining Contractual Term | 1 year |
| Outstanding, Aggregate Intrinsic Value | $ 622,561 |
| Exercisable, Aggregate Intrinsic Value | $ 622,561 |
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- Details
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- Definition
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded. No definition available.
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- Definition
The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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