CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2018		1	51,071,573
Beginning balance at Dec. 31, 2018	$ 372,576	$ 0	$ 5	$ (3,885)	$ 535,819	$ (138,789)	$ (28,837)	$ 8,263
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	1,440				1,440
Issuance of stock, net of forfeitures (in shares)			549,197
Comprehensive loss	(32,582)					(34,888)	2,364	(58)
Ending balance (in shares) at Jun. 30, 2019		1	51,620,770
Ending balance at Jun. 30, 2019	341,434	$ 0	$ 5	(3,885)	537,259	(173,677)	(26,473)	8,205
Beginning balance (in shares) at Mar. 31, 2019		1	51,425,734
Beginning balance at Mar. 31, 2019	355,998	$ 0	$ 5	(3,885)	536,407	(151,408)	(33,418)	8,297
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	852				852
Issuance of stock, net of forfeitures (in shares)			195,036
Comprehensive loss	(15,416)					(22,269)	6,945	(92)
Ending balance (in shares) at Jun. 30, 2019		1	51,620,770
Ending balance at Jun. 30, 2019	341,434	$ 0	$ 5	(3,885)	537,259	(173,677)	(26,473)	8,205
Beginning balance (in shares) at Dec. 31, 2019		1	51,839,527
Beginning balance at Dec. 31, 2019	334,030	$ 0	$ 5	(3,885)	561,006	(199,621)	(31,060)	7,585
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	1,601				1,601
Issuance of stock, net of forfeitures (in shares)			991,361
Shares withheld for taxes (in shares)			(40,168)
Shares withheld for taxes	(220)				(220)
Issuance of common stock under employee stock purchase plan (in shares)			84,369
Issuance of common stock under employee stock purchase plan	197				197
Comprehensive loss	(30,336)					(20,202)	(9,771)	(363)
Ending balance (in shares) at Jun. 30, 2020		1	52,875,089
Ending balance at Jun. 30, 2020	305,272	$ 0	$ 5	(3,885)	562,584	(219,823)	(40,831)	7,222
Beginning balance (in shares) at Mar. 31, 2020		1	51,835,988
Beginning balance at Mar. 31, 2020	320,571	$ 0	$ 5	(3,885)	561,483	(203,269)	(41,182)	7,419
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	958				958
Issuance of stock, net of forfeitures (in shares)			964,532
Shares withheld for taxes (in shares)			(9,800)
Shares withheld for taxes	(54)				(54)
Issuance of common stock under employee stock purchase plan (in shares)			84,369
Issuance of common stock under employee stock purchase plan	197				197
Comprehensive loss	(16,400)					(16,554)	351	(197)
Ending balance (in shares) at Jun. 30, 2020		1	52,875,089
Ending balance at Jun. 30, 2020	$ 305,272	$ 0	$ 5	$ (3,885)	$ 562,584	$ (219,823)	$ (40,831)	$ 7,222