Supplementary Financial Data (Unaudited)

12 Months Ended

Sep. 30, 2016

Quarterly Financial Information Disclosure [Abstract]

Supplementary Financial Data (Unaudited)

Supplementary Financial Data (Unaudited)

The following table presents selected unaudited consolidated financial results for each of the eight quarters in the two-year period ended September 30, 2016. 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.

	Quarter Ended
	September 30, 2016		June 30, 2016		March 31, 2016		December 31, 2015
	(In thousands, except per share data)
Revenues	$	235,824	$	238,778	$	206,678	$	200,076
Cost of revenues (1)	74,298		66,384		62,298		62,193
Gross profit	161,526		172,394		144,380		137,883
Net income	$	32,104	$	34,987	$	23,116	$	19,241
Earnings per share (2):
Basic	$	1.04	$	1.12	$	0.74	$	0.62
Diluted	$	1.00	$	1.08	$	0.72	$	0.59
Shares used in computing earnings per share:
Basic	30,916		31,149		31,268		31,185
Diluted	32,221		32,313		32,262		32,436

	Quarter Ended
	September 30, 2015		June 30, 2015		March 31, 2015		December 31, 2014
	(In thousands, except per share data)
Revenues	$	232,756	$	209,366	$	207,109	$	189,550
Cost of revenues (1)	67,042		66,202		70,991		66,300
Gross profit	165,714		143,164		136,118		123,250
Net income	$	33,319	$	19,906	$	18,870	$	14,407
Earnings per share (2):
Basic	$	1.07	$	0.64	$	0.60	$	0.45
Diluted	$	1.03	$	0.62	$	0.58	$	0.43
Shares used in computing earnings per share:
Basic	31,214		31,118		31,335		31,936
Diluted	32,494		32,363		32,448		33,128

(1) Cost of revenues excludes amortization expense of $1.7 million, $1.9 million, $1.9 million, $1.9 million, $1.8 million, $1.9 million, $1.9 million and $1.8 million for the quarters ended September 30, 2016, June 30, 2016, March 31, 2016, December 31, 2015, September 30, 2015, June 30, 2015, March 31, 2015 and December 31, 2014, respectively.

(2) 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.