XML 69 R56.htm IDEA: XBRL DOCUMENT
v3.25.3

LOANS AND CREDIT QUALITY - Amortized Cost of Collateral-dependent Loans by Class and Collateral Type (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | $ 14,568,795 | $ 9,643,497
Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 60,866 | 4,373
Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 5
Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 293 | 10
Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 6,835 | 441
Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 18,057 | 0
Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 18,123 | 1,064
Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 4,700 | 2,853
Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 12,858 | 0
Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 547,311 | 410,040
Commercial and industrial | Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 20,822 | 1,079
Commercial and industrial | Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 5
Commercial and industrial | Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 293 | 10
Commercial and industrial | Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 3,848 | 0
Commercial and industrial | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial and industrial | Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,015 | 1,064
Commercial and industrial | Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,808 | 0
Commercial and industrial | Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 12,858 | 0
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5,448,374 | 2,794,581
Commercial real estate | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5,448,374 | 2,794,581
Commercial real estate | Multifamily | Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 17,892 |
Commercial real estate | Multifamily | Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Multifamily | Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Multifamily | Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Multifamily | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 17,892 |
Commercial real estate | Multifamily | Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Multifamily | Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Multifamily | Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Non-owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,864,040 | 1,657,597
Commercial real estate | Non-owner occupied | Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 15,018 |
Commercial real estate | Non-owner occupied | Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Non-owner occupied | Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Non-owner occupied | Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Non-owner occupied | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Non-owner occupied | Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 15,018 |
Commercial real estate | Non-owner occupied | Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Non-owner occupied | Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 535,776 | 104,430
Commercial real estate | Construction and land development | Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,987 | 441
Commercial real estate | Construction and land development | Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Construction and land development | Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Construction and land development | Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,987 | 441
Commercial real estate | Construction and land development | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Construction and land development | Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Construction and land development | Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Construction and land development | Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 709,239 | 360,100
Commercial real estate | Owner occupied | Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,090 |
Commercial real estate | Owner occupied | Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Owner occupied | Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Owner occupied | Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Owner occupied | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Owner occupied | Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,090 |
Commercial real estate | Owner occupied | Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Commercial real estate | Owner occupied | Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 |
Residential Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 3,907,101 | 2,280,963
Residential Real Estate | Total Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,057 | 2,853
Residential Real Estate | Automobiles |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Residential Real Estate | Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Residential Real Estate | Farmland |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Residential Real Estate | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 165 | 0
Residential Real Estate | Retail Building |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Residential Real Estate | Single Family Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,892 | 2,853
Residential Real Estate | Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Auto |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 954,615 | 1,596,935
Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | $ 602,339 | $ 438,851

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_AutomobilesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=hmst_FarmlandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=srt_MultifamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=hmst_RetailBuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=hmst_OtherNonRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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

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