CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Stock Preferred Series A	Common Stock Preferred Series A-1	Common Stock	Additional Paid-In Capital Preferred Series A	Additional Paid-In Capital Preferred Series A-1	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Preferred Series A	Preferred Series A-1	Total
Balance at Dec. 31, 2016			$ 1,324			$ 59,154	$ (221)	$ (15,738)	$ 5		$ 44,524
Balance (in shares) at Dec. 31, 2016			13,239,000						50,000
Increase (Decrease) in Stockholders' Equity
Stock-based compensation						2,340					2,340
Issuance of restricted common stock, net of taxes withheld			$ 25			(180)					(155)
Issuance of restricted common stock, net of taxes withheld (in shares)			249,000
Foreign currency translation							492				492
Net loss								(2,458)			(2,458)
Balance at Dec. 31, 2017			$ 1,349			61,314	271	(18,196)	$ 5		$ 44,743
Balance (in shares) at Dec. 31, 2017			13,488,000						50,000		13,488,366
Increase (Decrease) in Stockholders' Equity
Issuance of common stock			$ 3,309			140,342					$ 143,651
Issuance of common stock (in shares)			33,095,000
Issuance of Series A-1 convertible preferred stock						13,305				$ 459	13,764
Issuance of Series A-1 convertible preferred stock (in shares)										4,588,000
Stock-based compensation						5,096					5,096
Issuance of restricted common stock, net of taxes withheld			$ 98			(1,201)					(1,103)
Issuance of restricted common stock, net of taxes withheld (in shares)			978,000
Conversion of preferred stock	$ 585	$ 495		$ (580)	$ (36)				$ (5)	$ (459)
Conversion of preferred stock (in shares)	5,852,000	4,951,000							(50,000)	(4,588,000)
Foreign currency translation							216				216
Net loss								(123,766)			(123,766)
Balance at Dec. 31, 2018			$ 5,836			$ 218,240	$ 487	(141,186)			$ 83,377
Balance (in shares) at Dec. 31, 2018			58,364,000								58,363,740
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adoption of ASC 606								$ 776			$ 776