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Subsequent Events - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
May 29, 2020
Apr. 30, 2020
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Subsequent Event [Line Items]          
Amount borrowed against credit agreement     $ 137,000,000 $ 26,000,000 $ 50,000,000
Loans outstanding     $ 129,000,000 $ 11,000,000  
Subsequent Event          
Subsequent Event [Line Items]          
Amount borrowed against credit agreement   $ 50,000      
Loans outstanding   $ 179,000      
Subsequent Event | COVID-19 Pandemic | Maximum          
Subsequent Event [Line Items]          
Expected number of positions eliminated percentage 3.00%