Quarterly Operating Results--(Unaudited)

12 Months Ended

Dec. 31, 2011

Quarterly Operating Results--(Unaudited)

10. Quarterly Operating Results––(Unaudited)

Quarterly results for the years ended December 31, 2011 and 2010 were as follows:

	Three Months Ended
	March 31		June 30		September 30		December 31
2011
Revenues	$	150,830	$	149,669	$	167,083	$	158,123
Gross profit		62,056		62,118		72,693		64,848
Net income		30,164		29,944		36,911		33,117
Earnings per share:
Basic	$	1.30	$	1.29	$	1.59	$	1.43
Diluted	$	1.30	$	1.29	$	1.59	$	1.43
2010
Revenues	$	123,449	$	111,532	$	118,517	$	119,584
Gross profit		42,565		41,241		44,499		46,366
Net income		18,992		18,734		20,175		20,815
Earnings per share:
Basic	$	0.82	$	0.81	$	0.87	$	0.90
Diluted	$	0.82	$	0.81	$	0.87	$	0.90

Quarterly data may not sum to full year data reported in the Consolidated Financial Statements due to rounding.