XML 42 R28.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Cash Restriction | 12 Months Ended
--- | ---
Dec. 31, 2021
Banking and Thrift, Other Disclosures [Abstract] |
Cash Restriction | Cash RestrictionThe Bank had restricted cash included in interest earning deposits of $9.8 million and $25.9 million as of December 31, 2021 and December 31, 2020, respectively, relating to collateral required on interest rate swaps from third-parties as discussed in Note (8) Derivative Financial Instruments. The Bank does not have a collateral requirement with customers.

X
- Definition Regulatory Cash Requirements Under Banking Regulations [Text Block] + References No definition available. + Details
Name: | hfwa_RegulatoryCashRequirementsUnderBankingRegulationsTextBlock
Namespace Prefix: | hfwa_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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