Basis of Presentation and New Accounting Pronouncements (Details) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
New Accounting Pronouncements Recently Adopted [Abstract]
Operating lease liabilities	$ 66,796,000	$ 66,796,000
Operating lease assets	65,652,000	65,652,000		$ 0
Gain in foreign currency-denominated lease liabilities	$ 2,128,000	$ 1,491,000	$ 0
ASU 2016-02 [Member]
New Accounting Pronouncements Recently Adopted [Abstract]
Operating lease liabilities				53,043,000
Operating lease assets				$ 50,773,000