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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Mar. 31, 2018
Operating Loss Carryforwards [Line Items] |  |  |
Benefit from income taxes | $ 5,217 | $ 5,436 |
Effective income tax rates | (15.70%) | (17.20%) |
Excess tax benefit | $ 8,300 | $ 9,900 |
Valuation allowance carry forward credit |  | 1,300 |
Tax benefit from reversal of uncertain tax position | 900 | $ 700 |
Unrecognized tax benefits | 68,500 |  | $ 69,100
Accrued interest and penalties related to uncertain tax positions | 2,400 |  | 2,300
Expected decrease in uncertain tax positions | 3,300 |  |
Non-current income tax payable |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Unrecognized tax benefits | $ 33,800 |  | $ 35,000

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