CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net revenue (A)	$ 29,734	[1]	$ 33,954	[1]	$ 57,964	$ 64,551
Cost of revenue (B)	15,698	[2]	19,832	[2]	30,870	36,379
Gross profit	14,036		14,122		27,094	28,172
Operating expenses:
Research and development	7,167		11,801		16,486	24,180
Sales and marketing	7,749		14,047		16,974	26,884
General and administrative	6,217		7,008		14,294	14,291
Restructuring and other charges	413		1,964		798	2,449
Lease exit and related charges	127		9		958	87
Total operating expenses	21,673		34,829		49,510	67,891
Operating income (loss)	(7,637)		(20,707)		(22,416)	(39,719)
Other income (expenses):
Interest income, net	80		250		197	450
Gain (loss) on investments, net	(46)		94		(43)	393
Equity in net loss of Rhapsody investment	(396)		(6,916)		(396)	(13,096)
Other income (expense), net	15		(112)		(272)	331
Total other income (expenses), net	(347)		(6,684)		(514)	(11,922)
Income (loss) before income taxes	(7,984)		(27,391)		(22,930)	(51,641)
Income tax expense (benefit)	363		390		588	609
Net income (loss)	$ (8,347)		$ (27,781)		$ (23,518)	$ (52,250)
Basic net income (loss) per share (USD per share)	$ (0.23)		$ (0.77)		$ (0.64)	$ (1.45)
Diluted net income (loss) per share (USD per share)	$ (0.23)		$ (0.77)		$ (0.64)	$ (1.45)
Shares used to compute basic net income (loss) per share (shares)	36,755		36,106		36,637	36,105
Shares used to compute diluted net income (loss) per share (shares)	36,755		36,106		36,637	36,105
Comprehensive income (loss):
Unrealized investment holding gains (losses), net of reclassification adjustments	$ 16		$ (191)		$ 167	$ (285)
Foreign currency translation adjustments, net of reclassification adjustments	(645)		588		55	(1,997)
Total other comprehensive income (loss)	(629)		397		222	(2,282)
Net income (loss)	(8,347)		(27,781)		(23,518)	(52,250)
Comprehensive income (loss)	$ (8,976)		$ (27,384)		$ (23,296)	$ (54,532)

[1] Quarters ended June 30, 2016 quarter ended June 30, 2016Components of Revenue License Fees6,678 6,921Service Revenue23,056 27,033Net Revenue29,734 33,954 6 months ended June 30, 2016 June 30, 2015Components of Revenue License Fees$12,455 $14,210Service Revenue45,509 50,341Net Revenue$57,964 $64,551

[2] Components of Cost of RevenueJune 30, 2016 June 30, 2015 License Fees1,399 1,428 Service Revenue14,299 18,404 Net Revenue Costs15,698 19,832 6 months ended June 30, 2016 June 30, 2015Components of Cost of Revenue License Fees$2,703 $3,171Service Revenue28,167 33,208Net Revenue Costs$30,870 $36,379