The following table provides a reconciliation of Non-GAAP net income and Non-GAAP net income per share - diluted to net (loss) income and net (loss) income per share – diluted, the most comparable GAAP financial measures:
| (Unaudited) | ||||||||||||||||
|
Three Months Ended
December 31, |
Twelve Months Ended
December 31, | |||||||||||||||
| (in thousands, except per share amounts) | 2019 | 2018 | 2019 | 2018 | ||||||||||||
| Net (loss) income | $ | (1,502 | ) | $ | (9,003 | ) | $ | (7,542 | ) | $ | 15,535 | |||||
| Stock-based compensation expense | 2,944 | 2,126 | 8,528 | 3,339 | ||||||||||||
| Amortization of intangible assets | 3,769 | 2,074 | 14,442 | 7,739 | ||||||||||||
| Acquisition related deferred revenue (1) | 2,250 | — | 9,000 | — | ||||||||||||
| Special adjustments (2) | — | 10,627 | 2,038 | 6,837 | ||||||||||||
| Income tax effect of non-GAAP adjustments | (527 | ) | (184 | ) | (1,630 | ) | (652 | ) | ||||||||
| Non-GAAP net income | $ | 6,934 | $ | 5,640 | $ | 24,836 | $ | 32,798 | ||||||||
| Net (loss) income per share - diluted | $ | (0.02 | ) | $ | (0.13 | ) | $ | (0.11 | ) | $ | 0.21 | |||||
| Non-GAAP net income per share - diluted | $ | 0.09 | $ | 0.07 | $ | 0.32 | $ | 0.42 | ||||||||
| GAAP diluted shares outstanding: | 72,227 | 70,548 | 71,544 | 74,878 | ||||||||||||
| Non-GAAP diluted shares outstanding: | 78,000 | 77,700 | 78,000 | 77,700 | ||||||||||||
