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Equity Method Investments- Textuals (Details) - USD ($)
shares in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2021
Schedule of Equity Method Investments          
Equity method investments $ 8,785,000   $ 8,785,000   $ 4,475,000
Loss from equity method investments (99,000) $ (510,000) (197,000) $ 546,000  
Other-than-temporary impairment loss on investments $ 348,000 $ 0 $ 348,000 $ 0  
Insignia          
Schedule of Equity Method Investments          
Number of shares held (in shares) 0.5   0.5    
Ownership percentage 28.00%   28.00%    
Equity method investments $ 0   $ 0    
Loss from equity method investments     $ 0    
Cadillac Castings, Inc          
Schedule of Equity Method Investments          
Ownership percentage 18.98%   18.98%    
Equity method investments $ 2,800,000   $ 2,800,000    
Loss from equity method investments 100,000   600,000    
Difference between carrying amount and underlying equity 300,000   300,000    
Investment realized gain (loss) on disposal (13,000)   $ (38,000)    
Other-than-temporary impairment loss on investments $ 300,000