Quarterly Financial Data

12 Months Ended

Dec. 31, 2013

Quarterly Financial Data [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
	(in thousands, except per share data)
2013
Revenue	$	78,243	$	93,586	$	98,388	$	100,848	$	371,065
Gross margin	32,630		37,594		37,502		39,801		147,527
Net income	7,765		8,440		8,968		11,005		36,178
Earnings per share (1):
Basic	$	0.16	$	0.17	$	0.17	$	0.21	$	0.70
Diluted	$	0.15	$	0.16	$	0.16	$	0.20	$	0.67
2012
Revenue	$	79,195	$	78,303	$	78,628	$	76,702	$	312,828
Gross margin	33,451		33,025		33,843		31,300		131,619
Net income	3,606		13,178		9,806		23,201		49,791
Earnings per share (1):
Basic	$	0.08	$	0.27	$	0.20	$	0.48	$	1.03
Diluted	$	0.07	$	0.25	$	0.19	$	0.44	$	0.97

(1)    The sum of the quarterly earnings per share (basic and diluted) may not agree to the earnings per share for the year due to the timing of common stock issuances.