Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Consolidated Statements of Operations
Revenue	$ 237,416	$ 263,790	$ 250,821
Cost of sales	114,784	119,613	113,572
Gross profit	122,632	144,177	137,249
Selling, general and administrative expenses	127,461	143,310	136,536
Amortization of intangible assets	4,288	4,571	3,710
Loss from operations	(9,117)	(3,704)	(2,997)
Interest expense and amortization of debt discount	(9,004)	(8,618)	(2,400)
Interest income and other expense, net	538	2,017	513
Loss before income taxes	(17,583)	(10,305)	(4,884)
Income tax (expense) benefit	(157)	28	5,153
Net (loss) income	(17,740)	(10,277)	269
Net (loss) income attributable to non-controlling interests	(647)	19	1,489
Net loss attributable to common stockholders	$ (17,093)	$ (10,296)	$ (1,220)
Net loss per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.38)	$ (0.23)	$ (0.03)
Diluted (in dollars per share)	$ (0.38)	$ (0.23)	$ (0.03)
Weighted average shares used in computing net loss per share attributable to common stockholders:
Basic (in shares)	44,440	43,977	42,066
Diluted (in shares)	44,440	43,977	42,066