UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net revenues	$ 23,699	$ 25,512
Cost of revenues	8,209	9,467
Gross profit	15,490	16,045
Operating expenses:
Marketing	1,221	2,750
General and administrative	8,935	7,700
Research and development	1,100	1,162
Total operating expenses	11,256	11,612
Operating income	4,234	4,433
Other income (expense):
Interest and dividend income	$ 7	11
Interest expense		$ (34)
Other income, net	$ (7)
Total other expense		$ (23)
Income before income taxes	$ 4,234	4,410
Income tax expense	3,500	3,102
Net income	$ 734	$ 1,308
Income per ordinary share:
Basic	$ 0.05	$ 0.07
Diluted	$ 0.05	$ 0.07
Weighted average ordinary shares outstanding:
Basic	15,647	17,868
Diluted	15,649	17,877