The following is a summary reconciliation of GAAP net income to non-GAAP adjusted net income and per share data, net of tax (in thousands, except per share data):
| Three Months Ended | |||||
| March 31, 2015 | |||||
| GAAP net income | $ | 11,132 | |||
| GAAP diluted earnings per share | $ | 0.23 | |||
| Adjustments to reconcile net income to adjusted net income: | |||||
| Retention costs | 70 | ||||
| Amortization of acquisition related intangible assets | 1,527 | ||||
| Non-GAAP adjusted net income | $ | 12,729 | |||
| Non-GAAP adjusted diluted earnings per share | $ | 0.26 | |||
