XML 95 R84.htm IDEA: XBRL DOCUMENT
v3.20.2

Income Taxes - Future Commitments of the Low Income Housing Investments (Details) - Low income housing investments $ in Thousands | Jun. 30, 2020 USD ($)
--- | ---
Future Commitments |
2020 | $ 28
2021 through 2023 | $ 597

X
- Definition Minimum amount of other commitment maturing after the first fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | htbk_CommitmentDueAfterFirstYear
Namespace Prefix: | htbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amount of commitment classified as other to be paid in remainder of current fiscal year. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsFutureMinimumPaymentsRemainderOfFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=htbk_LowIncomeHousingInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |