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Loans - Troubled Debt Restructuring (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified as troubled debt restructurings | $ 1,155 | $ 4,399
Balance at period end | 1,116 | 4,396
Commercial and Industrial Total Energy Loans [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified as troubled debt restructurings | 0 | 3,817
Balance at period end | 0 | 3,817
Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified as troubled debt restructurings | 1,155 | 582
Balance at period end | $ 1,116 | $ 579

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- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
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- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
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