Quarterly Financial Information (unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information (unaudited)

(15) QUARTERLY FINANCIAL INFORMATION (unaudited)

The following table contains selected financial information from unaudited statements of income for each quarter of 2015 and 2014.

	Quarters Ended
	2015								2014
	Dec. 31 (a)		Sept. 30		June 30		Mar. 31		Dec. 31		Sept. 30		June 30		Mar. 31
Revenues	$	158,916	$	150,845	$	146,295	$	134,966	$	127,440	$	128,664	$	124,371	$	112,626
Gross profit		73,222		71,833		68,253		63,879		60,491		61,792		58,558		52,530
Income before income taxes		19,540		31,744		29,781		27,359		24,760		26,698		23,406		19,603
Net income		8,618		20,142		18,836		17,273		15,317		17,000		14,740		11,883
Earnings per diluted share		0.23		0.55		0.52		0.48		0.43		0.48		0.42		0.33
Shares used in computing diluted    earnings per share		37,864		36,349		36,097		35,895		35,661		35,284		35,161		35,500
(a) Operating results for the three months ended December 31, 2015, include $5.5 million for financial advisory, legal, accounting, due diligence, valuation and other services necessary to complete the NWS acquisition as well as $3.5 million amortization expense related to NWS acquisition intangibles.