Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

	2012			2011			2010
Net income	$	23,428		$	26,177		$	24,766
Dividends and undistributed earnings allocated to participating securities(1)		(60	)		(42	)		(38	)
Net income available to common shareholders	$	23,368		$	26,135		$	24,728
Weighted-average common shares outstanding for basic EPS		7,646,861			7,672,126			7,655,668
Dilutive effect of stock-based awards(2)		14,412			7,769			7,830
Weighted-average common and potential common shares for diluted EPS		7,661,273			7,679,895			7,663,498
EARNINGS PER COMMON SHARE:
Basic EPS	$	3.06		$	3.41		$	3.23
Diluted EPS		3.05			3.40			3.23

(1) Represents dividends paid and undistributed earnings allocated to nonvested restricted stock awards.

(2) Represents the effect of the assumed exercise of stock options, vesting of restricted shares, and vesting of restricted stock units, based on the treasury stock method.