Quarterly Results of Operations (Unaudited): (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Quarterly Results Of Operations

	Quarter Ended
	March 31		June 30		Sept. 30		Dec. 31
	(In thousands, except per share data)
	(Unaudited)
2012
Revenues	$	177,124	$	176,570	$	190,860	$	188,477
Cost of sales		107,050		108,325		121,821		114,470
Gross profit		70,074		68,245		69,039		74,007
Operating income		40,032		41,349		38,723		41,588
Net income		28,797		29,803		29,657		30,952
Earnings per share:
Basic(1)	$	0.72	$	0.74	$	0.73	$	0.77
Diluted(1)		0.71		0.74		0.73		0.76
2011
Revenues	$	137,667	$	136,994	$	155,035	$	171,646
Cost of sales		80,113		82,000		96,487		103,248
Gross profit		57,554		54,994		58,548		68,398
Operating income		30,595		30,428		31,776		36,840
Net income		21,672		22,208		23,263		28,124
Earnings per share:
Basic(1)	$	0.54	$	0.55	$	0.58	$	0.70
Diluted(1)		0.54		0.55		0.58		0.70

(1) The sum of the quarterly per share amounts may not equal the annual amount reported, as per share amounts are computed independently for each quarter and for the full year.