v2.4.0.8
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Revenues:        
Product revenues $ 75,508 $ 67,446 $ 220,325 $ 175,239
Services and other revenues 18,531 16,885 54,510 48,619
Total revenues 94,039 84,331 274,835 223,858
Cost of revenues:        
Cost of product revenues 33,977 30,636 103,810 79,532
Cost of services and other revenues 8,022 7,608 24,250 23,114
Total cost of revenues 41,999 38,244 128,060 102,646
Gross profit 52,040 46,087 146,775 121,212
Operating expenses:        
Research and development 6,561 5,545 21,665 17,538
Selling, general and administrative 34,762 29,316 100,866 86,382
Total operating expenses 41,323 34,861 122,531 103,920
Income from operations 10,717 11,226 24,244 17,292
Interest and other income (expense), net 25 34 (134) 57
Income before provision for income taxes 10,742 11,260 24,110 17,349
Provision for income taxes 2,987 4,340 6,954 6,703
Net income $ 7,755 $ 6,920 $ 17,156 $ 10,646
Net income per share:        
Net income per share-basic $ 0.22 $ 0.21 $ 0.50 $ 0.32
Net income per share - diluted $ 0.21 $ 0.20 $ 0.48 $ 0.31
Weighted average shares outstanding:        
Basic (in shares) 35,133 33,193 34,499 33,316
Diluted (in shares) 36,190 34,068 35,466 34,241