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Leases - Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases [Abstract]        
Operating lease expense $ 3,527 $ 3,674 $ 6,915 $ 7,670
Short-term lease expense 196 311 424 532
Variable lease expense $ 625 $ 645 $ 1,324 $ 1,390