Consolidated Statement of Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Shares [Member]	Treasury Stock [Member]	Warrants [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2017	$ 32,604	$ 5,032	$ (970)		$ 575,411	$ (124,766)	$ (422,103)
Beginning balance, shares at Dec. 31, 2017		50,319,000	333,000	700,000
Expiration of warrants				(700,000)
Issuance of restricted stock units		$ 28			(28)
Issuance of restricted stock units, shares		286,000
Share-based compensation	340				340
Tax effect of restricted stock	(11)				(11)
Foreign currency translation adjustment	(23,217)					(23,217)
Net income (loss)	(4,501)						(4,501)
Ending balance at Sep. 30, 2018	5,215	$ 5,060	$ (970)		575,712	(147,983)	(426,604)
Ending balance, shares at Sep. 30, 2018		50,605,000	333,000
Beginning balance at Jun. 30, 2018	18,578	$ 5,059	$ (970)		575,591	(136,218)	(424,884)
Beginning balance, shares at Jun. 30, 2018		50,591,000	333,000
Issuance of restricted stock units		$ 1			(1)
Issuance of restricted stock units, shares		14,000
Share-based compensation	122				122
Foreign currency translation adjustment	(11,765)					(11,765)
Net income (loss)	(1,720)						(1,720)
Ending balance at Sep. 30, 2018	5,215	$ 5,060	$ (970)		575,712	(147,983)	(426,604)
Ending balance, shares at Sep. 30, 2018		50,605,000	333,000
Beginning balance at Dec. 31, 2018	$ 12,419	$ 5,241	$ (970)		577,488	(142,021)	(427,319)
Beginning balance, shares at Dec. 31, 2018	52,413,588	52,413,000	333,000
Issuance of common shares	$ 3,684	$ 498			3,186
Issuance of common shares, (in shares)		4,986,000
Issuance of restricted stock units		$ 32			(32)
Issuance of restricted stock units, shares		310,000
Share-based compensation	298				298
Tax effect of restricted stock	(97)				(97)
Foreign currency translation adjustment	(3,834)					(3,834)
Net income (loss)	(2,841)						(2,841)
Ending balance at Sep. 30, 2019	$ 9,629	$ 5,771	$ (970)		580,843	(145,855)	(430,160)
Ending balance, shares at Sep. 30, 2019	57,708,698	57,709,000	333,000
Beginning balance at Jun. 30, 2019	$ 3,948	$ 5,273	$ (970)		577,538	(146,663)	(431,230)
Beginning balance, shares at Jun. 30, 2019		52,723,000	333,000
Issuance of common shares	3,684	$ 498			3,186
Issuance of common shares, (in shares)		4,986,000
Share-based compensation	119				119
Foreign currency translation adjustment	808					808
Net income (loss)	1,070						1,070
Ending balance at Sep. 30, 2019	$ 9,629	$ 5,771	$ (970)		$ 580,843	$ (145,855)	$ (430,160)
Ending balance, shares at Sep. 30, 2019	57,708,698	57,709,000	333,000