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Share-Based Compensation - Additional Information (Detail) (USD $)
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3 Months Ended | |
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Mar. 31, 2013
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Mar. 31, 2012
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||
| Share-Based Compensation Expense | $ 97,000 | $ 92,000 |
| Related tax benefits on non-qualified stock options | $ 12,000 | $ 4,000 |
| Number of shares, stock options exercised | 1,679 | |
| Restricted stock awards, continuous employment period from date of grant required for vesting of Plan | Three to five years | |
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Restricted Stock Units Vesting Period No definition available.
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- Details
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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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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. 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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