Quarterly Information (Unaudited) (Details) (USD $)	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Net revenue	$ 35,506,000		$ 34,157,000		$ 40,825,000	[1]	$ 45,724,000		$ 50,595,000	[2]	$ 48,958,000		$ 49,850,000	[1]	$ 56,793,000		$ 156,212,000	[3]	$ 206,196,000	[3]	$ 258,842,000	[3]
Gross profit	17,625,000	[2]	15,229,000		20,039,000	[1]	37,518,000		30,519,000	[2]	29,968,000		30,331,000	[1]	36,287,000		90,411,000		127,105,000		155,111,000
Operating (loss) income	(20,682,000)	[2]	(20,763,000)		(18,832,000)	[1]	(8,876,000)		(14,441,000)	[2]	(28,437,000)		(16,504,000)	[1]	(11,426,000)		(69,153,000)		(70,808,000)		55,563,000
Net income (loss)	(20,838,000)	[2]	(22,178,000)		(21,029,000)	[1]	(7,770,000)		2,530,000	[2]	(31,375,000)		(18,471,000)	[1]	(11,674,000)		(71,815,000)		(58,990,000)		44,841,000
Basic net income (loss) (in dollars per share)	$ (0.58)	[2],[4]	$ (0.62)	[4]	$ (0.59)	[1],[4]	$ (0.22)	[4]	$ 0.07	[2],[4]	$ (0.88)	[4]	$ (0.52)	[1],[4]	$ (0.33)	[4]	$ (2.00)		$ (1.66)	[4]	$ 1.29
Diluted net income (loss) (in dollars per share)	$ (0.58)	[2],[4]	$ (0.62)	[4]	$ (0.59)	[1],[4]	$ (0.22)	[4]	$ 0.07	[2],[4]	$ (0.88)	[4]	$ (0.52)	[1],[4]	$ (0.33)	[4]	$ (2.00)	[4]	$ (1.66)	[4]	$ 1.28
Net gain on sale of other investments																					116,400,000
Extinguishment of liability							10,600,000										10,580,000		0		0
Investment [Line Items]
Gain on sale of equity and other investments, net																	2,371,000		21,389,000		5,072,000
Payments for litigation									11,500,000
LoEn Entertainment, Inc
Investment [Line Items]
Gain on sale of equity and other investments, net									$ 21,400,000										$ 21,400,000		$ 4,300,000

[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] In the quarter ended December 31, 2013, we sold our remaining shares of common stock in LoEn Entertainment for a net gain of $21.4 million, as described in further detail in Note 5.

[3] December 31, 2012 December 31, 2011 December 31, 2010Components of Cost of Revenue License Fees8,012 8,538 11,689Service Revenue68,369 70,553 92,042Net Revenue Costs76,381 79,091 103,731

[4] The sum of the quarterly net income per share amounts will not necessarily equal net income per share for the year due to the use of weighted average quarterly shares and the effects of rounding.