Fair value of all asset derivatives designated as cash flow hedging instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

+ Details

Name:	us-gaap_CashFlowHedgeDerivativeInstrumentAssetsAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of all liability derivatives designated as cash flow hedging instruments.

+ References

+ Details

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

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

+ Details

Name:	us-gaap_DerivativeAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of all derivative assets designated as fair value hedging instruments.

+ References

+ Details

Name:	us-gaap_FairValueHedgeAssetsAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of all derivative liabilities designated as fair value hedging instruments.

+ References

+ Details

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

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=hbk_OffsettingCommercialRealEstateLoanByInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=hbk_LoansAndLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 19 - Fair Value Measurements - Derivatives Measured On a Recurring Basis (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] \| Loans and Leases [Member]
Commercial real estate loan, fair value	$ 3,022,744	$ 3,201,691
Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] \| Loans and Leases [Member] \| Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan	3,022,744	3,201,691
Interest Rate Swap [Member]
Loans - Commercial real estate loan	217,464
Interest Rate Swap [Member] \| Other Liabilities [Member]
Derivative - Interest rate swap		(26,647)
Interest Rate Swap [Member] \| Other Liabilities [Member] \| Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value	69,148
Derivatives - Interest rate swaps designated as cash flow hedge	247,736
Derivative - Interest rate swap		(26,647)
Derivatives - Interest rate swaps designated as cash flow hedge		(83,634)
Fair Value, Inputs, Level 1 [Member] \| Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] \| Loans and Leases [Member] \| Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan
Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member] \| Other Liabilities [Member] \| Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value
Derivatives - Interest rate swaps designated as cash flow hedge
Derivative - Interest rate swap
Derivatives - Interest rate swaps designated as cash flow hedge
Fair Value, Inputs, Level 2 [Member] \| Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] \| Loans and Leases [Member] \| Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan	3,022,744	3,201,691
Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member] \| Other Liabilities [Member] \| Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value	69,148
Derivatives - Interest rate swaps designated as cash flow hedge	217,464
Derivative - Interest rate swap		(26,647)
Derivatives - Interest rate swaps designated as cash flow hedge		(83,634)
Fair Value, Inputs, Level 3 [Member] \| Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] \| Loans and Leases [Member] \| Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan
Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member] \| Other Liabilities [Member] \| Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value
Derivatives - Interest rate swaps designated as cash flow hedge
Derivative - Interest rate swap
Derivatives - Interest rate swaps designated as cash flow hedge