General - New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019	Apr. 01, 2018	Apr. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 243,522
Deferred rent obligations			$ (21,107)
Total	$ 264,815
Cumulative effect after tax decrease to retained earnings		$ 1,068		$ (468)	$ (1,558)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		230,048
Deferred rent obligations		27,895
Total		254,538
Prepaid rent		4,846
Cumulative effect after tax decrease to retained earnings		$ 1,068