Loans - Narrative (Detail) (Commercial Real Estate and Commercial Loans, USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014
Commercial Real Estate and Commercial Loans
Loans Receivable [Line Items]
Loans sold and serviced by the company	$ 36.6	$ 34.4

The unpaid principal balance of loans originated and sold by the entity, on which it continues to provide loan servicing to transferees.

No definition available.

Name:	hbnk_UnpaidPrincipalBalanceOfLoansSoldAndServiced
Namespace Prefix:	hbnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant