Computation of Net Earnings per Share (Details) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares
Computation of Net Earnings per Share
Net income available to common stockholders | $	$ 2,937	$ 5,883	$ 4,885	$ 7,751
Weighted average common shares outstanding used in computing basic earnings per share	29,097	28,446	29,066	28,367
Incremental options and RSUs	1,604	1,707	1,541	1,608
Weighted average common shares outstanding used in computing diluted net earnings per share	30,701	30,153	30,607	29,975
Net earnings per share
Basic | $ / shares	$ 0.10	$ 0.21	$ 0.17	$ 0.27
Diluted | $ / shares	$ 0.10	$ 0.20	$ 0.16	$ 0.26
Weighted Average Number Diluted Shares Outstanding Adjustment, Total	900	100	900	200
Common Stock
Computation of Net Earnings per Share
Reverse stock split conversion ratio			0.25