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Loans and Allowance for Loan Losses - Allowance for Loan Losses Activity by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | $ 35,273 | $ 49,006
Loans charged-off | (555) | (795)
Recoveries of loans charged-off | 540 | 622
Net loans (charged-off) recovered | (15) | (173)
Provision for (reversal of) loan losses(1) | 266 | (7,379)
Balance at end of period | 35,524 | 41,454
Construction Real Estate Loans |  |
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | 3,787 | 6,490
Loans charged-off | 0 | 0
Recoveries of loans charged-off | 0 | 1
Net loans (charged-off) recovered | 0 | 1
Provision for (reversal of) loan losses(1) | (183) | 1,710
Balance at end of period | 3,604 | 8,201
1-4 Family Residential Real Estate Loans |  |
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | 1,866 | 2,270
Loans charged-off | 0 | (73)
Recoveries of loans charged-off | 39 | 55
Net loans (charged-off) recovered | 39 | (18)
Provision for (reversal of) loan losses(1) | 77 | 256
Balance at end of period | 1,982 | 2,508
Commercial Real Estate Loans |  |
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | 26,980 | 35,709
Loans charged-off | 0 | 0
Recoveries of loans charged-off | 47 | 0
Net loans (charged-off) recovered | 47 | 0
Provision for (reversal of) loan losses(1) | 198 | (8,473)
Balance at end of period | 27,225 | 27,236
Commercial loans |  |
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | 2,397 | 4,107
Loans charged-off | (131) | (319)
Recoveries of loans charged-off | 216 | 282
Net loans (charged-off) recovered | 85 | (37)
Provision for (reversal of) loan losses(1) | (28) | (962)
Balance at end of period | 2,454 | 3,108
Municipal loans |  |
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | 47 | 46
Loans charged-off | 0 | 0
Recoveries of loans charged-off | 0 | 0
Net loans (charged-off) recovered | 0 | 0
Provision for (reversal of) loan losses(1) | 1 | 0
Balance at end of period | 48 | 46
Loans to individuals |  |
Allowances for Loan Losses [Roll Forward] |  |
Balance at beginning of period | 196 | 384
Loans charged-off | (424) | (403)
Recoveries of loans charged-off | 238 | 284
Net loans (charged-off) recovered | (186) | (119)
Provision for (reversal of) loan losses(1) | 201 | 90
Balance at end of period | $ 211 | $ 355

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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) + Details
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