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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenues $ 102,100 $ 116,176
Cost of revenues 44,059 51,854
Gross margin 58,041 64,322
Operating expenses:    
Sales and marketing expenses 19,916 23,264
General and administrative expenses 23,509 22,760
Research and development expenses 8,685 10,715
Amortization of intangible assets 5,710 5,746
Impairment charges 0 1,460
Total operating expenses 57,820 63,945
Operating income 221 377
Other expense:    
Interest expense (4,831) (5,410)
Debt extinguishment and related costs (1,876) 0
Other expense, net (806) (469)
Total other expense (7,513) (5,879)
Loss before income taxes (7,292) (5,502)
Income tax expense (benefit) 518 (815)
Net loss $ (7,810) $ (4,687)
Loss per share:    
Basic and diluted loss per share (in dollars per share) $ (0.20) $ (0.12)
Weighted-average common shares:    
Basic and diluted (in shares) 38,640 37,814