Equity Method Investments - Narrative (Details) - USD ($) shares in Millions	3 Months Ended			6 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Schedule of Equity Method Investments
Income (loss) from equity method investments	$ 748,000		$ 266,000	$ 1,439,000		$ 798,000
Equity method investments	$ 14,179,000			$ 14,179,000			$ 13,230,000
Insignia
Schedule of Equity Method Investments
Number of shares held (in shares)	0.5			0.5
Ownership percentage	27.10%			27.10%
Income (loss) from equity method investments		$ (10,000)			$ 400,000
Equity method investments	$ 2,100,000			$ 2,100,000
Cadillac Castings, Inc
Schedule of Equity Method Investments
Ownership percentage	20.10%			20.10%
Income (loss) from equity method investments	$ 700,000			$ 1,400,000
Equity method investments	4,000,000			4,000,000
Difference between carrying amount and underlying equity	300,000			300,000
Investment realized gain (loss) on disposal	$ (12,000)			$ (25,000)