| Three Months Ended | |||||||||||||||||||||||||
| March 31, 2020 | |||||||||||||||||||||||||
| (in thousands, except percentages and per share data) | Revenue | Gross Profit | % | Operating Income | % | Net Income | EPS - Diluted 1 | ||||||||||||||||||
| Total GAAP | $ | 304,985 | $ | 254,869 | 83.6 | % | $ | 34,073 | 11.2 | % | $ | 46,064 | $ | 0.53 | |||||||||||
| Acquisition accounting for deferred revenue | 3,912 | 3,912 | 0.2 | % | 3,912 | 1.1 | % | 3,912 | 0.04 | ||||||||||||||||
| Stock-based compensation expense | — | 2,866 | 0.9 | % | 30,941 | 10.0 | % | 30,941 | 0.36 | ||||||||||||||||
| Excess payroll taxes related to stock-based awards | — | 523 | 0.1 | % | 6,983 | 2.3 | % | 6,983 | 0.08 | ||||||||||||||||
| Amortization of intangible assets from acquisitions | — | 9,552 | 3.2 | % | 13,714 | 4.4 | % | 13,714 | 0.16 | ||||||||||||||||
| Transaction expenses related to business combinations | — | — | — | % | 950 | 0.3 | % | 950 | 0.01 | ||||||||||||||||
| Rabbi trust (income) / expense | — | — | — | % | — | — | % | (4 | ) | — | |||||||||||||||
| Adjustment for income tax effect | — | — | — | % | — | — | % | (30,255 | ) | (0.35 | ) | ||||||||||||||
| Total non-GAAP | $ | 308,897 | $ | 271,722 | 88.0 | % | $ | 90,573 | 29.3 | % | $ | 72,305 | $ | 0.83 | |||||||||||
