XML 108 R94.htm IDEA: XBRL DOCUMENT
v3.22.4

COMMITMENTS, GUARANTEES AND CONTINGENCIES - Schedule of Commitments (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Loss Contingencies [Line Items] |  |
Unfunded commitment balance of loans sold on a servicing-retained basis | $ 1,365,959 | $ 1,316,975
Unused consumer portfolio lines |  |
Loss Contingencies [Line Items] |  |
Unfunded commitment balance of loans sold on a servicing-retained basis | 531,784 | 405,992
Commercial portfolio lines |  |
Loss Contingencies [Line Items] |  |
Unfunded commitment balance of loans sold on a servicing-retained basis | 788,108 | 820,131
Commitments to fund loans |  |
Loss Contingencies [Line Items] |  |
Unfunded commitment balance of loans sold on a servicing-retained basis | 46,067 | 90,852
Undisbursed construction loan funds |  |
Loss Contingencies [Line Items] |  |
Unfunded commitment balance of loans sold on a servicing-retained basis | $ 525,000 | $ 584,000

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=hmst_UnusedConsumerPortfolioLoanFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=hmst_UnusedCommercialPortfolioLoanFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=hmst_UndisbursedConstructionLoanFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |