CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock	Comprehensive Income (Loss)	Noncontrolling interest
Balance at Dec. 31, 2016	$ 231,435	$ 140	$ 1,018,010	$ (722,630)	$ (64,085)		$ 0
Balance (in shares) at Dec. 31, 2016		13,955,000			2,164,000
Increase (Decrease) in Stockholders' Equity
Net income and comprehensive income	23,304			23,304		$ 23,304
Non-cash compensation	$ 13,068		13,068
Purchase of treasury stock (in shares)	42,153				42,000
Purchase of treasury stock	$ (10,001)				$ (10,001)
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes	1,064	$ 2	1,062
Issuance of common stock for stock options, restricted stock awards and restricted stock units, net of withholding taxes (in shares)		219,000
Cumulative effect adjustment due to ASU 2016-09	985		2,287	(1,302)
Issuance of 0.625% Convertible Senior Notes, net	60,411		60,411
Convertible note hedge	61,500		61,500
Sale of warrants	43,410		43,410
Noncontrolling interest	637						637
Balance at Sep. 30, 2017	$ 302,813	$ 142	$ 1,076,748	$ (700,628)	$ (74,086)		$ 637
Balance (in shares) at Sep. 30, 2017		14,174,000			2,206,000