Loans - Schedule of Troubled Debt Restructurings With Payment Default (Details) $ in Thousands	3 Months Ended
Sep. 30, 2017 USD ($) loan	Sep. 30, 2016 USD ($) loan
Financing Receivable, Modifications
Number of loans \| loan	4	9
Recorded investment \| $	$ 1,044	$ 1,437
Extended term
Financing Receivable, Modifications
Number of loans \| loan	0	1
Recorded investment \| $	$ 0	$ 39
Other TDR
Financing Receivable, Modifications
Number of loans \| loan	4	8
Recorded investment \| $	$ 1,044	$ 1,398
Retail Consumer Loans \| Extended term \| One-to-four family
Financing Receivable, Modifications
Number of loans \| loan	0	1
Recorded investment \| $	$ 0	$ 39
Retail Consumer Loans \| Other TDR \| One-to-four family
Financing Receivable, Modifications
Number of loans \| loan	3	3
Recorded investment \| $	$ 372	$ 57
Commercial Loans \| Other TDR \| Construction and development
Financing Receivable, Modifications
Number of loans \| loan	0	2
Recorded investment \| $	$ 0	$ 371
Commercial Loans \| Other TDR \| Commercial and industrial
Financing Receivable, Modifications
Number of loans \| loan	0	3
Recorded investment \| $	$ 0	$ 970
Commercial Loans \| Other TDR \| Commercial real estate
Financing Receivable, Modifications
Number of loans \| loan	1
Recorded investment \| $	$ 672

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.

No definition available.

+ Details

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

- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=htbi_OtherTroubledDebtRestructingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_OneToFourFamilyLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_ConstructionAndDevelopmentLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_CommercialandIndustrialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: