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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenue        
Total Revenue $ 52,495 $ 51,126 $ 147,481 $ 138,785
Cost of goods sold        
Total Cost of goods sold 17,952 14,480 42,260 40,179
Gross profit 34,543 36,646 105,221 98,606
Operating costs        
Sales and marketing 16,039 13,956 46,938 42,997
Research and development 8,992 5,493 22,805 17,669
General and administrative 10,184 9,882 32,168 26,323
Amortization / impairment of intangible assets 2,442 2,203 7,387 6,603
Total operating costs 37,657 31,534 109,298 93,592
Operating income (loss) (3,114) 5,112 (4,077) 5,014
Interest income, net 258 386 991 1,016
Other income (expense), net 246 (185) 2,025 402
Income (loss) before income taxes (2,610) 5,313 (1,061) 6,432
Provision (benefit) for income taxes (1,702) 2,558 (943) 2,994
Net income (loss) $ (908) $ 2,755 $ (118) $ 3,438
Net income (loss) per share        
Basic (in dollars per share) $ (0.02) $ 0.07 $ 0.00 $ 0.09
Diluted (in dollars per share) $ (0.02) $ 0.07 $ 0.00 $ 0.09
Weighted average common shares outstanding        
Basic (in shares) 39,922 39,811 39,924 39,792
Diluted (in shares) 39,922 39,821 39,924 39,802
Product and license        
Revenue        
Total Revenue $ 36,882 $ 38,421 $ 105,362 $ 104,454
Cost of goods sold        
Total Cost of goods sold 14,321 12,083 32,897 32,668
Service and other        
Revenue        
Total Revenue 15,613 12,705 42,119 34,331
Cost of goods sold        
Total Cost of goods sold $ 3,631 $ 2,397 $ 9,363 $ 7,511