Condensed Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Royalty and license	$ 15,939	$ 11,602	$ 31,951	$ 26,759
Development, services, and other	284	229	559	508
Total revenues	16,223	11,831	32,510	27,267
Costs and expenses:
Cost of revenues (exclusive of amortization of intangibles shown separately below)	115	101	230	221
Sales and marketing	3,670	2,637	7,880	5,400
Research and development	3,499	3,006	7,226	6,064
General and administrative	6,719	5,950	15,012	12,471
Amortization of intangibles	3	20	15	40
Total costs and expenses	14,006	11,714	30,363	24,196
Operating income	2,217	117	2,147	3,071
Interest and other income	46	144	21	137
Income before provision for income taxes	2,263	261	2,168	3,208
Provision for income taxes	(668)	(92)	(632)	(1,175)
Net income	$ 1,595	$ 169	$ 1,536	$ 2,033
Basic net income per share	$ 0.06	$ 0.01	$ 0.05	$ 0.07
Shares used in calculating basic net income per share	28,070	28,383	27,944	28,376
Diluted net income per share	$ 0.06	$ 0.01	$ 0.05	$ 0.07
Shares used in calculating diluted net income per share	28,906	29,210	28,779	29,330
Other Comprehensive Income
Change in unrealized gains on short-term investments	$ 3	$ 1	$ 4	$ 2
Total Other Comprehensive Income	3	1	4	2
Total Comprehensive Income	$ 1,598	$ 170	$ 1,540	$ 2,035