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Basic and Diluted Earnings Per Share (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Shares used in the calculation of Basic earnings per share	13,510,573	13,262,023	13,459,049	13,212,424
Effect of dilutive securities:
Stock options, SARs, RSAs, and shares held in escrow	1,068,354	1,181,771	1,025,929	1,090,015
Diluted shares used in the calculation of earnings per share	14,578,927	14,443,794	14,484,978	14,302,439

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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-Publisher FASB

-Name Accounting Standards Codification

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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.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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