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Shares Used to Compute Basic and Diluted Net Earning Per Share (Detail)
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3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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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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| Schedule Of Earnings Per Share Basic And Diluted [Line Items] | |||||||||||
| Weighted average shares | 24,726,148 | 24,663,027 | 24,356,298 | 24,564,947 | 24,554,245 | 24,546,056 | 24,279,251 | 24,520,858 | 24,577,605 | 24,475,102 | 24,086,829 |
| Effect of dilutive securities - stock options | 409,361 | 208,542 | 566,636 | ||||||||
| Weighted average shares adjusted for dilutive securities | 25,266,368 | 25,358,052 | 24,356,298 | 24,753,671 | 24,737,629 | 24,746,164 | 24,491,530 | 24,759,253 | 24,986,966 | 24,683,644 | 24,653,465 |
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- Details
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- Definition
The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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