CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND NONCONTROLLING INTEREST - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Deficit)
Accumulated other comprehensive income (loss), beginning of period at Dec. 31, 2014	$ 197,198	$ 36	$ 617,756	$ (55,252)	$ (365,342)
Balances (shares) at Dec. 31, 2014		36,099
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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	341	$ 0	341
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)		(199)
Share of Rhapsody equity transactions	4,521		4,521
Share-based Compensation	4,698
Stock-based compensation	4,698		4,698
Other comprehensive income (loss)	(4,228)			(4,228)
Net income (loss)	(81,847)				(81,847)
Accumulated other comprehensive loss balance, end of period at Dec. 31, 2015	120,683	$ 36	627,316	(59,480)	(447,189)
Balances (shares) at Dec. 31, 2015		36,298
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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	(344)	$ 1	(345)
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)		(1,203)
Share of Rhapsody equity transactions	1,533		1,533
Share-based Compensation	5,424
Stock-based compensation	5,424		5,424
Other comprehensive income (loss)	(2,165)			(2,165)
Net income (loss)	(36,550)				(36,550)
Accumulated other comprehensive loss balance, end of period at Dec. 31, 2016	88,581	$ 37	633,928	(61,645)	(483,739)
Balances (shares) at Dec. 31, 2016		37,501
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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	(117)	$ 0	(117)
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)		(160)
Share of Rhapsody equity transactions	1,241		1,241
Share-based Compensation	3,675		3,675
Stock-based compensation	3,675
Other comprehensive income (loss)	2,098			2,098
Net income (loss)	(16,305)
Accumulated other comprehensive loss balance, end of period at Dec. 31, 2017	$ 79,173	$ 37	$ 638,727	$ (59,547)	$ (500,044)
Balances (shares) at Dec. 31, 2017		37,341