Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Common Share [Abstract]

Computations of basic and diluted earnings per common share

	Three Months Ended September 30,				Nine Months Ended September 30,
Basic earnings per common share:	2012		2011		2012		2011
Numerator:
Net earnings	$	2,565	$	422	$	3,859	$	1,504
Denominator:
Weighted-average common shares outstanding		25,541		24,744		25,370		24,510
Basic earnings per common share	$	0.10	$	0.02	$	0.15	$	0.06

	Three Months Ended September 30,				Nine Months Ended September 30,
Diluted earnings per common share:	2012		2011		2012		2011
Numerator:
Net earnings	$	2,565	$	422	$	3,859	$	1,504
Denominator:
Weighted-average common shares outstanding		25,541		24,744		25,370		24,510
Incremental shares from stock-based compensation plans		709		469		572		391
Denominator for diluted earnings per common share		26,250		25,213		25,942		24,901
Diluted earnings per common share	$	0.10	$	0.02	$	0.15	$	0.06