CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Noncontrolling Interest
Beginning Balance (in shares) at Dec. 31, 2016		0	28,229,000
Beginning Balance at Dec. 31, 2016	$ 7,757	$ 0	$ 28	$ 2,170,272	$ (6,655)	$ (2,150,326)	$ (5,562)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock, net of issuance cots (in shares)		22,500
Issuance of stock, net of issuance cots	42,669			42,669
Conversion of stock (in shares)		(21,900)	14,616,000
Conversion of stock	0		$ 15	(15)
Value of beneficial conversion features related to preferred stock	0			4,350		(4,350)
Issuance of warrants	470			470
Equity-based compensation (in shares)			150,000
Equity-based compensation	5,746			5,746
Noncontrolling interest	(161)						(161)
Other (in shares)			(26,000)
Other	(104)			(104)
Net loss for the year ended	(40,670)					(40,670)
Other comprehensive income (loss)	383				383
Ending Balance (in shares) at Dec. 31, 2017		600	42,969,000
Ending Balance at Dec. 31, 2017	16,090	$ 0	$ 43	2,223,388	(6,272)	(2,195,346)	(5,723)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock, net of issuance cots (in shares)			23,000,000
Issuance of stock, net of issuance cots	64,170		$ 23	64,147
Conversion of stock (in shares)		12,000	(8,000,000)
Conversion of stock	0		$ (8)	8
Value of beneficial conversion features related to preferred stock	0			80		(80)
Equity-based compensation	6,369			6,369
Noncontrolling interest	(32)						(32)
Other (in shares)			17,000
Other	33			33
Net loss for the year ended	(29,320)					(29,320)
Other comprehensive income (loss)	(4,371)				(4,371)
Ending Balance (in shares) at Dec. 31, 2018		12,600	57,986,000
Ending Balance at Dec. 31, 2018	$ 52,939	$ 0	$ 58	$ 2,294,025	$ (10,643)	$ (2,224,746)	$ (5,755)