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Consolidated Statements of Operations and Comprehensive Income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Revenue $ 28,156 $ 41,804
Cost of goods sold 14,785 17,795
Gross profit 13,371 24,009
Operating expenses:    
Sales and marketing 9,908 10,996
Research and product development 7,840 9,342
General and administrative 5,950 7,161
Impairment of an intangible asset 769
Impairment of goodwill 0 12,724
Legal settlement (790)
Total operating expenses 23,698 40,202
Operating loss (10,327) (16,193)
Other income, net 80 300
Loss before income taxes (10,247) (15,893)
Provision for/(benefit from) income taxes 6,440 (1,721)
Net loss $ (16,687) $ (14,172)
Basic loss per common share (in dollars per share) $ (1.87) $ (1.65)
Diluted loss per common share (in dollars per share) $ (1.87) $ (1.65)
Basic weighted average shares outstanding (in shares) 8,942,629 8,576,588
Diluted weighted average shares outstanding (in shares) 8,942,629 8,576,588
Comprehensive loss:    
Net loss $ (16,687) $ (14,172)
Other comprehensive income/loss:    
Unrealized gain (loss) on available-for-sale securities, net of tax (38) 36
Change in foreign currency translation adjustment (78) 104
Comprehensive loss $ (16,803) $ (14,032)