Segment Information (Segment Results) (Detail) - USD ($) $ in Thousands		3 Months Ended										12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	[1]	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	[1]	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue		$ 29,922	$ 30,823	$ 33,954	$ 30,597		$ 35,506	$ 34,157	$ 40,825	$ 45,724		$ 125,296	[2]	$ 156,212	[2]	$ 206,196	[2]
Cost of revenue	[3]											70,297		76,381		79,091
Extinguishment of liability												0		10,580		0
Gross profit		14,094	12,733	14,122	14,050		17,625	15,229	20,039	37,518		54,999		90,411		127,105
Operating expenses												124,186		159,564		197,913
Operating (loss) income		$ (7,506)	$ (21,962)	$ (20,707)	$ (19,012)		$ (20,682)	$ (20,763)	$ (18,832)	$ (8,876)		(69,187)		(69,153)		(70,808)
RealPlayer Group
Segment Reporting Information [Line Items]
Revenue												29,141		39,201		75,206
Cost of revenue												16,171		14,508		16,220
Gross profit												12,970		24,693		58,986
Operating expenses												47,149		55,742		60,484
Operating (loss) income												(34,179)		(31,049)		(1,498)
Mobile Entertainment
Segment Reporting Information [Line Items]
Revenue												65,407		79,901		81,181
Cost of revenue												44,212		50,399		47,608
Gross profit												21,195		29,502		33,573
Operating expenses												20,256		33,325		35,839
Operating (loss) income												939		(3,823)		(2,266)
Games
Segment Reporting Information [Line Items]
Revenue												30,748		37,110		49,809
Cost of revenue												9,291		11,074		13,359
Gross profit												21,457		26,036		36,450
Operating expenses												29,086		37,170		47,177
Operating (loss) income												(7,629)		(11,134)		(10,727)
Corporate
Segment Reporting Information [Line Items]
Cost of revenue												623		400		1,904
Extinguishment of liability												0		(10,580)		0
Operating expenses												27,695		33,327		54,413
Operating (loss) income												$ (28,318)		$ (23,147)		$ (56,317)

[1] In the quarter ended March 31, 2014, certain accrued royalty liabilities of $10.6 million associated with our historical music business, which had originally been recorded based on statutory rates, were extinguished.

[2] December 31, 2013 December 31, 2012 December 31, 2011Components of Revenue License Fees28,422 28,308 43,709Service Revenue96,874 127,904 162,487Net Revenue125,296 156,212 206,196

[3] December 31, 2012 December 31, 2011 December 31, 2010Components of Cost of Revenue License Fees6,381 8,012 8,538Service Revenue63,916 68,369 70,553Net Revenue Costs70,297 76,381 79,091