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Employee Benefit Plans (Funded Status of Plan) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Share-based Payment Arrangement [Abstract]      
Fair value of plan assets $ 98,010 $ 90,365 $ 84,718
Less: projected benefit obligations 160,914 143,662 $ 128,915
Underfunded status $ (62,904) $ (53,297)