XML 117 R104.htm IDEA: XBRL DOCUMENT
v3.20.4

Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Goodwill |  |  |
Goodwill | $ 167,631,000 | $ 167,420,000 | $ 83,753,000
Goodwill acquired |  | 83,878,000 | 38,039,000
BVF/CSNK |  |  |
Goodwill |  |  |
Goodwill acquired | 13,044,000 |  |
Focus |  |  |
Goodwill |  |  |
Goodwill acquired | 32,619,000 |  |
Tri Valley Bank |  |  |
Goodwill |  |  |
Goodwill | 13,819,000 |  |
Goodwill acquired | 13,819,000 |  |
United American Bank |  |  |
Goodwill |  |  |
Goodwill | 24,271,000 |  |
Goodwill acquired | 24,271,000 |  |
Presidio bank |  |  |
Goodwill |  |  |
Goodwill | 83,878,000 |  |
Goodwill acquired | 83,878,000 |  |
Banking |  |  |
Goodwill |  |  |
Goodwill | 154,587,000 | 154,376,000 | 70,709,000
Factoring |  |  |
Goodwill |  |  |
Goodwill | $ 13,044,000 | $ 13,044,000 | $ 13,044,000

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

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=htbk_BvfCsnkAcquisitionCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=htbk_FocusBusinessBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=htbk_TriValleyBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=htbk_UnitedAmericanBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=htbk_PresidioBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=htbk_BankingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=htbk_FactoringSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |