In the opinion of management, this unaudited information has been prepared on the same basis as the audited information and includes all adjustments (consisting of only normal recurring adjustments, except as noted below) necessary for a fair statement of the consolidated financial information for the period presented.


	September 30, 2012		June 30, 2012		March 31, 2012		December 31, 2011
	(In thousands, except per share data)
Revenues	$	186,075	$	160,478	$	159,521	$	170,349
Cost of revenues (2)		55,327		47,832		48,814		45,974

Gross profit		130,748		112,646		110,707		124,375

Net income (3)	$	21,246	$	20,749	$	20,012	$	29,997


Earnings per share (1):
Basic	$	0.62	$	0.61	$	0.57	$	0.83

Diluted	$	0.60	$	0.59	$	0.55	$	0.81

Shares used in computing earnings per share:
Basic		34,262		34,004		35,331		36,034
Diluted		35,513		35,293		36,552		36,887


	September 30, 2011		June 30, 2011		March 31, 2011		December 31, 2010
	(In thousands, except per share data)
Revenues	$	160,249	$	150,679	$	152,824	$	155,931
Cost of revenues (2)		48,763		43,398		48,506		45,803

Gross profit		111,486		107,281		104,318		110,128

Net income (3)	$	24,619	$	23,189	$	7,745	$	16,009

Earnings per share (1):
Basic	$	0.65	$	0.59	$	0.19	$	0.40

Diluted	$	0.64	$	0.58	$	0.19	$	0.40

Shares used in computing earnings per share:
Basic		38,088		39,451		40,010		39,923
Diluted		38,687		40,241		40,618		40,439

(1)	Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per share amounts may not equal the totals for the respective years.

(2)

Cost of revenues excludes amortization expense of $0.5 million, $0.1 million, $0.1 million, $0.6 million, $0.5 million, $0.6 million, $0.6 million and $0.6 million for the quarters ended September 30, 2012, June 30, 2012, March 31, 2012, December 31, 2011, September 30, 2011, June 30, 2011, March 31, 2011 and December 31, 2010, respectively.

(3)	Net income includes restructuring and acquisition-related expenses of $5.1 million, $11.5 million, $0.9 million and $1.6 million for the quarters ended September 30, 2012, March 31, 2011 and December 31, 2010, respectively.