XML 66 R56.htm IDEA: XBRL DOCUMENT
v3.22.1

MORTGAGE BANKING OPERATIONS - Gain on Sale (Details) - Commercial loans - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Gain on mortgage loan origination and sale activities [Line Items] |  |
Gain on loan origination and sale activities | $ 8,274 | $ 33,459
Single family |  |
Gain on mortgage loan origination and sale activities [Line Items] |  |
Gain on loan origination and sale activities | 6,169 | 26,187
CRE, multifamily and SBA |  |
Gain on mortgage loan origination and sale activities [Line Items] |  |
Gain on loan origination and sale activities | $ 2,105 | $ 7,272

X
- Definition Gain on mortgage loan origination and sale activities [Line Items] + References No definition available. + Details
Name: | hmst_GainOnMortgageLoanOriginationAndSaleActivitiesLineItems
Namespace Prefix: | hmst_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net Gains Losses On Mortgage Loan Origination And Sales Activities, Including Discontinued Operations + References No definition available. + Details
Name: | hmst_NetGainsLossesOnMortgageLoanOriginationAndSalesActivitiesIncludingDiscontinuedOperations
Namespace Prefix: | hmst_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=hmst_CREMultifamilyAndSBAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |