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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)
9 Months Ended 12 Months Ended
Dec. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]        
Goodwill and intangible asset impairment $ 0      
Amortization   $ 2,600,000 $ 3,100,000 $ 6,100,000