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Summary of Significant Accounting Policies (Concentration Risk) (Details) - Customer concentration risk	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Customer A | Gross sales
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	14.00%	13.00%	13.00%
Customer A | Accounts receivable
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	14.00%	14.00%
Customer B | Gross sales
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	19.00%	18.00%	19.00%
Customer B | Accounts receivable
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	21.00%	20.00%
Customer C | Gross sales
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	12.00%	14.00%	15.00%
Customer C | Accounts receivable
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	10.00%	15.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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