XML 40 R28.htm IDEA: XBRL DOCUMENT v3.25.3

Accounts Receivable, Amount Due From Factor, and Allowance for Credit Losses (Details) - USD ($)	6 Months Ended
	Sep. 30, 2025	Mar. 31, 2025
Accounts Receivable, Amount Due From Factor, and Allowance for Credit Losses
Provision for credit losses related to amounts due from factor	$ 0
Provision for credit losses	$ 870,000	$ 470,000

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountsReceivableNetAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents allowance related to amounts due from factor.

+ References

No definition available.

+ Details

Name:	uuu_AllowanceRelatedToAmountsDueFromFactor
Namespace Prefix:	uuu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration