Fair Value Measurements Schedule of Fair Value Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation asset	$ 6,164	$ 7,300
Non-qualified deferred compensation liability	(3,756)	(4,447)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation asset	6,164	7,300
Non-qualified deferred compensation liability	$ (3,756)	$ (4,447)