Supplementary Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Supplementary Financial Data (Unaudited)

16. Supplementary Financial Data (Unaudited)

(in thousands, except per share amounts)

	Three Months Ended
	December 31, 2013		September 30, 2013		June 30, 2013		March 31, 2013		December 31, 2012		September 30, 2012		June 30, 2012		March 31, 2012
Revenue	$	43,032	$	40,468	$	41,085	$	42,039	$	39,034	$	37,982	$	38,496	$	34,349
Gross profit		36,074		33,392		33,930		34,892		32,107		31,471		31,331		29,896
Net income		8,094		7,064		7,311		8,616		7,840		7,990		7,415		5,720
Net income available to common shareholders—basic		7,973		6,950		7,182		8,478		7,717		7,857		7,286		5,633
Net income available to common shareholders— diluted		7,973		6,950		7,185		8,481		7,720		7,857		7,286		5,636
Income per common share:
Basic	$	0.21	$	0.18	$	0.19	$	0.23	$	0.21	$	0.22	$	0.20	$	0.16
Diluted	$	0.20	$	0.18	$	0.18	$	0.22	$	0.20	$	0.21	$	0.19	$	0.15