Note 13 - Subsequent Events (Details Textual)	Feb. 21, 2022 USD ($)
US Alliance Life and Security Company [Member]
Agreement to Contribute Capital, Amount	$ 700,000

The amount of amount of agreement to contribute capital.

No definition available.

Name:	usac_AgreementToContributeCapitalAmount
Namespace Prefix:	usac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant