SUPPLEMENTAL FINANCIAL INFORMATION
STOCK-BASED COMPENSATION EXPENSE (Unaudited, in thousands) | ||||||||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
2019 | 2018 | 2019 | 2018 | |||||||||||||
Cost of revenue | $ | 663 | $ | 480 | $ | 1,193 | $ | 913 | ||||||||
Research and development | 5,412 | 4,194 | 9,841 | 8,188 | ||||||||||||
Selling, general and administrative | 16,634 | 11,218 | 27,685 | 21,820 | ||||||||||||
Total stock-based compensation expense | $ | 22,709 | $ | 15,892 | $ | 38,719 | $ | 30,921 | ||||||||
RECONCILIATION OF NET INCOME TO NON-GAAP NET INCOME
(Unaudited, in thousands, except per share amounts) | ||||||||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
2019 | 2018 | 2019 | 2018 | |||||||||||||
Net income | $ | 20,693 | $ | 24,206 | $ | 46,874 | $ | 46,062 | ||||||||
Net income as a percentage of revenue | 13.7 | % | 17.3 | % | 16.0 | % | 17.1 | % | ||||||||
Adjustments to reconcile net income to non-GAAP net income: | ||||||||||||||||
Stock-based compensation expense | 22,709 | 15,892 | 38,719 | 30,921 | ||||||||||||
Amortization of acquisition-related intangible assets | 51 | 197 | 102 | 447 | ||||||||||||
Deferred compensation plan expense (income) | 151 | (9 | ) | 15 | 40 | |||||||||||
Tax effect | (1,739 | ) | (332 | ) | (5,937 | ) | (2,546 | ) | ||||||||
Non-GAAP net income | $ | 41,865 | $ | 39,954 | $ | 79,773 | $ | 74,924 | ||||||||
Non-GAAP net income as a percentage of revenue | 27.7 | % | 28.6 | % | 27.3 | % | 27.9 | % | ||||||||
Non-GAAP net income per share: | ||||||||||||||||
Basic | $ | 0.97 | $ | 0.95 | $ | 1.86 | $ | 1.78 | ||||||||
Diluted | $ | 0.92 | $ | 0.90 | $ | 1.76 | $ | 1.69 | ||||||||
Shares used in the calculation of non-GAAP net income per share: | ||||||||||||||||
Basic | 43,109 | 42,237 | 42,929 | 42,079 | ||||||||||||
Diluted | 45,483 | 44,400 | 45,358 | 44,341 | ||||||||||||