RECONCILIATION OF GROSS MARGIN TO NON-GAAP GROSS MARGIN
(Unaudited, in thousands)
| Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
| 2020 | 2019 | 2020 | 2019 | |||||||||||||
| Gross profit | $ | 102,593 | $ | 83,225 | $ | 194,040 | $ | 161,231 | ||||||||
| Gross margin | 55.1 | % | 55.1 | % | 55.1 | % | 55.1 | % | ||||||||
| Adjustments to reconcile gross profit to non-GAAP gross profit: | ||||||||||||||||
| Stock-based compensation expense | 642 | 663 | 1,199 | 1,193 | ||||||||||||
| Deferred compensation plan expense | 460 | - | 406 | - | ||||||||||||
| Amortization of acquisition-related intangible assets | - | 51 | - | 102 | ||||||||||||
| Non-GAAP gross profit | $ | 103,695 | $ | 83,939 | $ | 195,645 | $ | 162,526 | ||||||||
| Non-GAAP gross margin | 55.7 | % | 55.6 | % | 55.6 | % | 55.6 | % | ||||||||
RECONCILIATION OF OPERATING EXPENSES TO NON-GAAP OPERATING EXPENSES
