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General - Narrative (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Sep. 30, 2017 USD ($) segment | Mar. 31, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Number of reportable segments | segment | 5 |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Deferred tax assets | $ 52,470 | $ 44,708
Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative effect of new accounting principle in period of adoption |  | 1,365
Accounting Standards Update 2016-09, Excess Tax Benefit Component |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Deferred tax assets |  | 1,365
Accounting Standards Update 2016-09, Excess Tax Benefit Component | Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative effect of new accounting principle in period of adoption |  | $ 1,365

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