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Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenues $ 28,778 $ 26,989
Cost of revenues 12,601 11,558
Gross profit 16,177 15,431
Sales and marketing expenses 6,687 5,386
General and administrative expenses 6,325 6,333
Research and development expenses 3,220 2,487
Amortization of intangible assets 1,466 1,464
Settlement of litigation - Note 13 5,191 0
Total operating expenses 22,889 15,670
Operating loss (6,712) (239)
Other (expense) income:    
Interest expense (384) (411)
Other income (expense), net 78 (34)
Total other expense (306) (445)
Loss before income taxes (7,018) (684)
Income tax benefit (138) (15)
Net loss $ (6,880) $ (669)
Loss per share:    
Basic and diluted loss per common share (in dollars per share) $ (0.17) $ (0.02)
Weighted-average common shares:    
Basic and diluted (in shares) 41,219 39,787