RECONCILIATION OF INCOME BEFORE INCOME TAXES TO NON-GAAP INCOME BEFORE INCOME TAXES
(Unaudited, in thousands) | ||||||||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
2019 | 2018 | 2019 | 2018 | |||||||||||||
Total income before income taxes | $ | 22,348 | $ | 27,114 | $ | 47,405 | $ | 49,591 | ||||||||
Adjustments to reconcile income before income taxes to non-GAAP income before income taxes: | ||||||||||||||||
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 | |||||||||||
Non-GAAP income before income taxes | $ | 45,259 | $ | 43,194 | $ | 86,241 | $ | 80,999 | ||||||||