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	2,256				2,256
Issuance of stock, net of forfeitures (in shares)			521,386
Comprehensive loss	(33,589)					(31,599)	(1,654)	(336)
Ending balance (in shares) at Sep. 30, 2019		1	51,592,959
Ending balance at Sep. 30, 2019	341,243	$ 0	$ 5	(3,885)	538,075	(170,388)	(30,491)	7,927
Beginning balance (in shares) at Jun. 30, 2019		1	51,620,770
Beginning balance at Jun. 30, 2019	341,434	$ 0	$ 5	(3,885)	537,259	(173,677)	(26,473)	8,205
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	816				816
Forfeiture of stock, net of issuances (in shares)			(27,811)
Comprehensive loss	(1,007)					3,289	(4,018)	(278)
Ending balance (in shares) at Sep. 30, 2019		1	51,592,959
Ending balance at Sep. 30, 2019	341,243	$ 0	$ 5	(3,885)	538,075	(170,388)	(30,491)	7,927
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	2,473				2,473
Issuance of stock, net of forfeitures (in shares)			1,178,663
Shares withheld for taxes (in shares)			(47,599)
Shares withheld for taxes	(239)				(239)
Issuance of common stock under employee stock purchase plan (in shares)			84,369
Issuance of common stock under employee stock purchase plan	197				197
Convertible preferred dividend	(4,400)				(4,400)
Comprehensive loss	(53,050)					(42,089)	(10,104)	(857)
Ending balance (in shares) at Sep. 30, 2020		1	53,054,960
Ending balance at Sep. 30, 2020	279,011	$ 0	$ 5	(3,885)	559,037	(241,710)	(41,164)	6,728
Beginning balance (in shares) at Jun. 30, 2020		1	52,875,089
Beginning balance at Jun. 30, 2020	305,272	$ 0	$ 5	(3,885)	562,584	(219,823)	(40,831)	7,222
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	872				872
Issuance of stock, net of forfeitures (in shares)			187,302
Shares withheld for taxes (in shares)			(7,431)
Shares withheld for taxes	(19)				(19)
Issuance of common stock under employee stock purchase plan (in shares)			0
Issuance of common stock under employee stock purchase plan	0				0
Convertible preferred dividend	(4,400)				(4,400)
Comprehensive loss	(22,714)					(21,887)	(333)	(494)
Ending balance (in shares) at Sep. 30, 2020		1	53,054,960
Ending balance at Sep. 30, 2020	$ 279,011	$ 0	$ 5	$ (3,885)	$ 559,037	$ (241,710)	$ (41,164)	$ 6,728