CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Royalty and license	$ 7,615	$ 15,939	$ 21,063	$ 31,951
Development, services, and other	249	284	424	559
Total revenues	7,864	16,223	21,487	32,510
Costs and expenses:
Cost of revenues (exclusive of amortization of intangibles shown separately below)	59	115	82	230
Sales and marketing	3,397	3,670	7,200	7,880
Research and development	2,966	3,499	7,278	7,226
General and administrative	11,001	6,719	21,091	15,012
Amortization of intangibles	2	3	5	15
Total costs and expenses	17,425	14,006	35,656	30,363
Operating income (loss)	(9,561)	2,217	(14,169)	2,147
Interest and other income (expense)	33	46	245	21
Income (loss) from continuing operations before benefit (provision) for income taxes	(9,528)	2,263	(13,924)	2,168
Benefit (provision) for income taxes	3,323	(668)	5,024	(632)
Income (loss) from continuing operations	(6,205)	1,595	(8,900)	1,536
Income from discontinued operations	649	0	649	0
Net income (loss) used in computing basic net income (loss) per share	$ (5,556)	$ 1,595	$ (8,251)	$ 1,536
Basic net income (loss) per share - Continuing operations (in dollars per share)	$ (0.22)	$ 0.06	$ (0.31)	$ 0.05
Basic net income (loss) per share - Discontinuing operations (in dollars per share)	0.02	0.00	0.02	0.00
Basic net income (loss) per share (in dollars per share)	$ (0.20)	$ 0.06	$ (0.29)	$ 0.05
Shares used in calculating basic net income (loss) per share (in shares)	28,834	28,070	28,663	27,944
Diluted net income (loss) per share - Continuing Operations (in dollars per share	$ (0.22)	$ 0.06	$ (0.31)	$ 0.05
Basic net income (loss) per share - Discontinued Operations (in dollars per share)	0.02	0.00	0.02	0.00
Diluted net income (loss) per share (in dollars per share)	$ (0.20)	$ 0.06	$ (0.29)	$ 0.05
Shares used in computation of diluted net income (loss) per share	28,834	28,906	28,663	28,779
Other comprehensive income
Change in unrealized gains on short-term investments	$ 23	$ 3	$ 55	$ 4
Total other comprehensive income	23	3	55	4
Total comprehensive income (loss)	$ (5,533)	$ 1,598	$ (8,196)	$ 1,540