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Income Taxes (Tables) | 3 Months Ended
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Sep. 30, 2016
Income Tax Disclosure [Abstract] |
Schedule of Details of Income Taxes | The following table provides details of income taxes:
| Three months ended September 30,
(Dollar amounts in thousands) | 2016 |  | 2015
Income before income taxes | $ | 222,220 |  |  | $ | 134,299 |
Provision for income taxes | $ | 44,119 |  |  | $ | 29,402 |
Effective tax rate | 19.9 | % |  | 21.9 | %

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