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Fair Value Measurements - Additional Information (Details) - USD ($)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Business Acquisition [Line Items]      
Net benefit from fair value adjustments $ 1,367,000 $ 950,000 $ (1,000,000)
Topaz Information Systems, LLC      
Business Acquisition [Line Items]      
Contingent consideration related to acquisitions 533,000 1,900,000  
Expected earnout payments   0  
Fair value of contingent consideration adjustment to accretion of present value discount   50,000  
Topaz Information Systems, LLC | Level 2      
Business Acquisition [Line Items]      
Contingent consideration related to acquisitions 533,000    
Net benefit from fair value adjustments $ 1,367,000    
Inforth Technologies L L C      
Business Acquisition [Line Items]      
Contingent consideration related to acquisitions     $ 1,000,000
Net benefit from fair value adjustments   $ 950,000