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Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Revenues $ 29,208 $ 29,197 $ 57,986 $ 56,186
Cost of revenues 12,571 12,844 25,172 24,402
Gross profit 16,637 16,353 32,814 31,784
Sales and marketing expenses 6,587 5,730 13,274 11,116
General and administrative expenses 5,981 6,399 12,306 12,732
Research and development expenses 3,497 2,701 6,717 5,188
Amortization of intangible assets 1,454 1,465 2,920 2,929
Settlement of litigation, net - Note 13 (4,880) 0 311 0
Total operating expenses 12,639 16,295 35,528 31,965
Operating income (loss) (3,998) (58) 2,714 181
Other expense:        
Interest expense 515 377 899 788
Other expense, net 62 313 (16) 347
Total other expense 577 690 883 1,135
Income (loss) before income taxes 3,421 (632) (3,597) (1,316)
Income tax expense (benefit) 986 (222) 848 (237)
Net income (loss) $ 2,435 $ (410) $ (4,445) $ (1,079)
Income (loss) per share:        
Basic income (loss) per common share (in dollars per share) $ 0.06 $ (0.01) $ (0.11) $ (0.03)
Diluted income (loss) per common share (in dollars per share) $ 0.06 $ (0.01) $ (0.11) $ (0.03)
Weighted-average common shares:        
Basic (in shares) 41,304 40,152 41,256 39,960
Diluted (in shares) 42,560 40,152 41,256 39,960