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Goodwill and Intangible Assets, Intangible Assets Subject to Amortization (Details) - USD ($)
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Intangible assets subject to amortization [Abstract]    
Weighted Average Amortization Period 9 years  
Gross Carrying Value $ 12,392,000 $ 12,492,000
Accumulated Amortization 8,593,000 7,163,000
Fully amortized intangible assets, retired $ 136,000 291,000
Trademarks [Member]    
Intangible assets subject to amortization [Abstract]    
Weighted Average Amortization Period 9 years  
Gross Carrying Value $ 705,000 842,000
Accumulated Amortization $ 513,000 551,000
Customer Relationships [Member]    
Intangible assets subject to amortization [Abstract]    
Weighted Average Amortization Period 11 years  
Gross Carrying Value $ 8,799,000 8,780,000
Accumulated Amortization $ 6,188,000 5,305,000
Developed Technology [Member]    
Intangible assets subject to amortization [Abstract]    
Weighted Average Amortization Period 5 years  
Gross Carrying Value $ 2,888,000 2,870,000
Accumulated Amortization $ 1,892,000 $ 1,307,000