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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Revenue    
Product and license $ 31,561 $ 38,731
Services and other 10,404 8,036
Total revenue 41,965 46,767
Cost of goods sold    
Product and license 9,540 12,811
Services and other 2,513 1,852
Total cost of goods sold 12,053 14,663
Gross profit 29,912 32,104
Operating costs    
Sales and marketing 13,702 12,870
Research and development 5,856 5,568
General and administrative 7,853 8,327
Amortization of purchased intangible assets 2,199 2,224
Total operating costs 29,610 28,989
Operating income 302 3,115
Interest income, net 290 109
Other income, net 214 361
Income before income taxes 806 3,585
Provision for income taxes 233 1,386
Net income $ 573 $ 2,199
Basic income per share $ 0.01 $ 0.06
Diluted income per share $ 0.01 $ 0.06
Weighted average common shares outstanding:    
Basic 39,760 39,681
Diluted 39,770 39,755