Loans, Impaired Financing Receivables Activity (Details)	3 Months Ended
Mar. 31, 2024
Summary of Information regarding impaired loans [Abstract]
Prior period within which impairment is being measured	1 year
Number of period within which average appraisals obtained	1 month

Represents prior period within which impairment is being measured.

No definition available.

Name:	hbia_PriorPeriodWithinWhichImpairmentIsBeingMeasured
Namespace Prefix:	hbia_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration