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Basis of Presentation and New Accounting Pronouncements (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Mar. 31, 2019
New Accounting Pronouncements Recently Adopted [Abstract] |  |  |  |
Operating lease liabilities | $ 52,412,000 | $ 52,412,000 |  |
Operating lease assets | 49,262,000 | 49,262,000 |  | $ 0
(Loss) in foreign currency-denominated lease liabilities | $ (1,139,000) | $ (637,000) | $ 0 |
ASU 2016-02 [Member] |  |  |  |
New Accounting Pronouncements Recently Adopted [Abstract] |  |  |  |
Operating lease liabilities |  |  |  | 53,043,000
Operating lease assets |  |  |  | $ 50,773,000

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- Definition Amount of gain (loss) on the remeasurement of lease liabilities. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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