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Financial and Other Guarantees Financial and Other Guarantees (Details)
$ in Thousands
6 Months Ended
Sep. 30, 2020
USD ($)
Product Warranty Liability [Line Items]  
Balance, March 31, 2017 $ 7,381
Warranties issued during the period 4,866
Settlement made during the period (5,296)
Balance, June 30, 2017 $ 6,951