CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND NONCONTROLLING INTEREST - USD ($)	Total	Preferred Class B	Preferred Stock	Preferred Stock Preferred Class B	Common Stock	Common Stock Common Stock	Additional Paid-In Capital	Additional Paid-In Capital Preferred Class B	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Parent [Member]	Parent [Member] Preferred Class B	Noncontrolling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 38,273,000		$ 0		$ 38,000		$ 644,070,000		$ (61,323,000)	$ (544,010,000)	$ 38,775,000		$ (502,000)
Additional funding in exchange for Preferred Stock	800,000
Balances (shares) at Dec. 31, 2019			0		38,227,000
Common stock issued for exercise of stock options, employee stock purchase plan, and vesting of restricted shares, net of tax payments from shares withheld upon vesting of restricted stock (shares)					197,000
Restricted Stock, Value, Shares Issued Net of Tax Withholdings					$ 0
Stock Issued During Period, Shares, New Issues				8,065,000
Stock Issued During Period, Value, New Issues				$ 8,000				$ 9,992,000
Stock Issued During Period, Value, Stock Options Exercised	(26,000)					$ (1,000)	(26,000)				(26,000)
Napster acquisition	10,000,000										10,000,000
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	1,420,000						1,420,000				1,420,000
Other Comprehensive Income (Loss), Net of Tax	909,000								909,000		909,000
Net Income (Loss) Attributable to Parent	(4,852,000)										(4,852,000)
Net Income (Loss) Attributable to Noncontrolling Interest	(284,000)												(468,000)
Net loss	(5,320,000)		$ (5,320,000)
Stockholders' Equity, Other	631,000						150,000		(227,000)		(77,000)		708,000
Balances (shares) at Dec. 31, 2020			8,065,000		38,424,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	45,887,000		$ 8,000		$ 38,000		655,606,000		(60,641,000)	(548,862,000)	46,149,000		(262,000)
Common stock issued for exercise of stock options, employee stock purchase plan, and vesting of restricted shares, net of tax payments from shares withheld upon vesting of restricted stock (shares)					583,000
Stock Issued During Period, Shares, New Issues				0		8,250,000
Stock Issued During Period, Value, New Issues		$ 20,114,000		$ 0		$ 8,000		$ 20,106,000				$ 20,114,000
Stock Issued During Period, Value, Stock Options Exercised	(349,000)						(348,000)				(349,000)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	2,222,000						2,222,000				2,222,000
Other Comprehensive Income (Loss), Net of Tax	(879,000)								(879,000)		(879,000)
Net Income (Loss) Attributable to Parent	(21,981,000)										(21,981,000)
Net Income (Loss) Attributable to Noncontrolling Interest	(244,000)												(244,000)
Net loss	(22,225,000)
Noncontrolling Interest, Decrease from Deconsolidation	506,000						99,000
Stockholders' Equity, Other	605,000										99,000
Balances (shares) at Dec. 31, 2021			8,065,000		47,257,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 46,073,000		$ 8,000		$ 47,000		$ 678,381,000		$ (61,520,000)	$ (570,843,000)	$ 46,073,000		$ 0