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Fair Value Measurements (Details)	12 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)
Other current liabilities [Abstract]
Deferred compensation	$ 1,837,000	$ 2,011,000
Change in contingent consideration measured at fair value recurring basis using significant unobservable inputs (Level 3) [Roll Forward]
Net carrying amount of convertible notes	30,776,000	30,994,000
Compound Net Derivative Liability [Member]
Change in contingent consideration measured at fair value recurring basis using significant unobservable inputs (Level 3) [Roll Forward]
Beginning balance	8,430,000	0
Newly issued	0	8,430,000
Changes in the fair value of the Compound Net Derivative Liability included in earnings	(1,020,000)	0
Ending balance	7,410,000	8,430,000
Net carrying amount of convertible notes	$ 30,776,000	$ 30,994,000
Compound Net Derivative Liability [Member] | Risk Free Interest Rate [Member]
Fair Value Valuation [Abstract]
Assumptions for fair value of Compound Net Derivative Liability	0.0436	0.0364
Compound Net Derivative Liability [Member] | Cost of Equity [Member]
Fair Value Valuation [Abstract]
Assumptions for fair value of Compound Net Derivative Liability	0.232	0.218
Compound Net Derivative Liability [Member] | Weighted Average Cost of Capital [Member]
Fair Value Valuation [Abstract]
Assumptions for fair value of Compound Net Derivative Liability	0.149	0.146
Compound Net Derivative Liability [Member] | Expected Volatility of MPA Common Stock [Member]
Fair Value Valuation [Abstract]
Assumptions for fair value of Compound Net Derivative Liability	0.50	0.50
Compound Net Derivative Liability [Member] | EBITDA Volatility [Member]
Fair Value Valuation [Abstract]
Assumptions for fair value of Compound Net Derivative Liability	0.40	0.35
Level 3 [Member] | Convertible Notes [Member]
Change in contingent consideration measured at fair value recurring basis using significant unobservable inputs (Level 3) [Roll Forward]
Estimated fair value of convertible notes	$ 38,276,000
Recurring [Member]
Short-Term Investments [Abstract]
Mutual funds	1,837,000	$ 2,011,000
Prepaid Expenses and Other Current Assets [Abstract]
Forward foreign currency exchange contracts	2,516,000	3,889,000
Other current liabilities [Abstract]
Deferred compensation	1,837,000	2,011,000
Convertible notes, related party [Abstract]
Compound Net Derivative Liability	7,410,000	8,430,000
Recurring [Member] | Level 1 [Member]
Short-Term Investments [Abstract]
Mutual funds	1,837,000	2,011,000
Prepaid Expenses and Other Current Assets [Abstract]
Forward foreign currency exchange contracts	0	0
Other current liabilities [Abstract]
Deferred compensation	1,837,000	2,011,000
Convertible notes, related party [Abstract]
Compound Net Derivative Liability	0	0
Recurring [Member] | Level 2 [Member]
Short-Term Investments [Abstract]
Mutual funds	0	0
Prepaid Expenses and Other Current Assets [Abstract]
Forward foreign currency exchange contracts	2,516,000	3,889,000
Other current liabilities [Abstract]
Deferred compensation	0	0
Convertible notes, related party [Abstract]
Compound Net Derivative Liability	0	0
Recurring [Member] | Level 3 [Member]
Short-Term Investments [Abstract]
Mutual funds	0	0
Prepaid Expenses and Other Current Assets [Abstract]
Forward foreign currency exchange contracts	0	0
Other current liabilities [Abstract]
Deferred compensation	0	0
Convertible notes, related party [Abstract]
Compound Net Derivative Liability	$ 7,410,000	$ 8,430,000

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