Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Computation Of Basic Earnings And Diluted Earnings Per Share Data

	Three months ended				Six months ended
	June 30,				June 30,
	2012		2011		2012		2011
Numerator for basic and diluted earnings per share:
Net income	$	7,105	$	5,624	$	12,786	$	11,352
Denominator:
Weighted-average basic common shares outstanding		30,171		32,005		30,175		31,912
Assumed conversion of dilutive securities:
Stock options		2,598		1,843		2,557		1,738
Denominator for diluted earnings per share - Adjusted weighted-average shares		32,769		33,848		32,732		33,650
Earnings per common share:
Basic	$	0.24	$	0.18	$	0.42	$	0.36
Diluted	$	0.22	$	0.17	$	0.39	$	0.34