Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non-controlling Interests	Total
Balance at Dec. 31, 2018	$ 4	$ 259,132	$ (129,930)	$ (1,295)	$ 2,211	$ 130,122
Balance (in shares) at Dec. 31, 2018	42,669
Issuance of common stock under stock incentive plans		6				6
Issuance of common stock under stock incentive plans (in shares)	1,310
Shares withheld for taxes		(32,907)				(32,907)
Stock-based compensation expense		2,574				2,574
Net (loss) income			(5,153)		(86)	(5,239)
Other comprehensive (loss) income				(22)	4	(18)
Balance at Mar. 31, 2019	$ 4	228,805	(135,083)	(1,317)	2,129	94,538
Balance (in shares) at Mar. 31, 2019	43,979
Balance at Dec. 31, 2018	$ 4	259,132	(129,930)	(1,295)	2,211	130,122
Balance (in shares) at Dec. 31, 2018	42,669
Net (loss) income						(5,010)
Balance at Jun. 30, 2019	$ 4	230,391	(134,867)	(1,212)	1,133	95,449
Balance (in shares) at Jun. 30, 2019	44,107
Balance at Mar. 31, 2019	$ 4	228,805	(135,083)	(1,317)	2,129	94,538
Balance (in shares) at Mar. 31, 2019	43,979
Issuance of common stock under stock incentive plans		74				74
Issuance of common stock under stock incentive plans (in shares)	128
Shares withheld for taxes		(759)				(759)
Stock-based compensation expense		2,271				2,271
Non-controlling interest distributions					(1,003)	(1,003)
Net (loss) income			216		13	229
Other comprehensive (loss) income				105	(6)	99
Balance at Jun. 30, 2019	$ 4	230,391	(134,867)	(1,212)	1,133	95,449
Balance (in shares) at Jun. 30, 2019	44,107
Balance at Dec. 31, 2019	$ 4	234,638	(140,973)	(1,426)	1,238	$ 93,481
Balance (in shares) at Dec. 31, 2019	44,224					44,224
Issuance of common stock under stock incentive plans		185				$ 185
Issuance of common stock under stock incentive plans (in shares)	90
Shares withheld for taxes		(461)				(461)
Stock-based compensation expense		1,686				1,686
Non-controlling interest distributions					(262)	(262)
Net (loss) income			(4,633)		(92)	(4,725)
Other comprehensive (loss) income				(1,019)	68	(951)
Balance at Mar. 31, 2020	$ 4	236,048	(145,606)	(2,445)	952	88,953
Balance (in shares) at Mar. 31, 2020	44,314
Balance at Dec. 31, 2019	$ 4	234,638	(140,973)	(1,426)	1,238	$ 93,481
Balance (in shares) at Dec. 31, 2019	44,224					44,224
Net (loss) income						$ (10,954)
Balance at Jun. 30, 2020	$ 4	237,985	(151,446)	(2,448)	586	$ 84,681
Balance (in shares) at Jun. 30, 2020	44,465					44,465
Balance at Mar. 31, 2020	$ 4	236,048	(145,606)	(2,445)	952	$ 88,953
Balance (in shares) at Mar. 31, 2020	44,314
Issuance of common stock under stock incentive plans		262				262
Issuance of common stock under stock incentive plans (in shares)	151
Shares withheld for taxes		(472)				(472)
Stock-based compensation expense		2,147				2,147
Net (loss) income			(5,840)		(389)	(6,229)
Other comprehensive (loss) income				(3)	23	20
Balance at Jun. 30, 2020	$ 4	$ 237,985	$ (151,446)	$ (2,448)	$ 586	$ 84,681
Balance (in shares) at Jun. 30, 2020	44,465					44,465