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DEPOSITS - Interest bearing Deposits - Narrative (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Deposits [Abstract] |  |
Reciprocal transaction deposits, Interest bearing demand deposits | $ 244,100 | $ 236,800
Time deposits, at or above FDIC insurance limit | 171,400 | 130,200
Time deposits in denominations of $100,000 or more | $ 406,400 | $ 342,800

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- Definition The amount of Reciprocal Transaction deposits made in interest bearing demand deposits. + References No definition available. + Details
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Namespace Prefix: | hbt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Industry Guide -Number 3 -Section V -Paragraph D-E -Publisher SEC + Details
Name: | us-gaap_TimeDeposits100000OrMore
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 405 -Topic 942 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481047/942-405-50-1 + Details
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Period Type: | instant