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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Revenue    
Total revenue $ 47,608 $ 45,432
Cost of goods sold    
Total cost of goods sold 16,039 10,735
Gross profit 31,569 34,697
Operating costs    
Sales and marketing 14,383 14,277
Research and development 10,495 5,797
General and administrative 9,870 10,774
Amortization of intangible assets 2,348 2,201
Total operating costs 37,096 33,049
Operating income (loss) (5,527) 1,648
Interest income, net 135 393
Other income (expense), net (551) 380
Income (loss) before income taxes (5,943) 2,421
Provision (benefit) for income taxes (272) 629
Net income (loss) $ (5,671) $ 1,792
Net income (loss) per share    
Basic (in dollars per share) $ (0.14) $ 0.04
Diluted (in dollars per share) $ (0.14) $ 0.04
Weighted average common shares outstanding    
Basic (in shares) 40,036 39,910
Diluted (in shares) 40,036 40,059
Product and license    
Revenue    
Total revenue $ 31,861 $ 33,494
Cost of goods sold    
Total cost of goods sold 11,316 8,185
Service and other    
Revenue    
Total revenue 15,747 11,938
Cost of goods sold    
Total cost of goods sold $ 4,723 $ 2,550