Deposits (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Banking and Thrift [Abstract]
Accrued interest payable on deposits	$ 390,000	$ 152,000
Time Deposits, $250,000 or More, Domestic	$ 79,800,000hfwa_TimeDeposits250000orMoreDomestic	$ 55,000,000hfwa_TimeDeposits250000orMoreDomestic

Amount of accrued but unpaid interest on deposit liabilities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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