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Loans and Allowance for Credit Losses - Changes in Allowance for Credit Losses by Class of Financing Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | $ 125,559 | $ 170,389
Provision for credit losses | (6,129) | (11,632)
Recoveries of loans previously charged-off | 1,198 | 367
Loans charged off | (579) | (1,170)
Balance at end of period | 120,049 | 157,954
Commercial and industrial |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 15,751 | 14,748
Provision for credit losses | (4,006) | 43
Recoveries of loans previously charged-off | 958 | 129
Loans charged off | (4) | (277)
Balance at end of period | 12,699 | 14,643
Construction |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 28,576 | 58,477
Provision for credit losses | 3,206 | (19,826)
Recoveries of loans previously charged-off | 0 | 0
Loans charged off | 0 | (29)
Balance at end of period | 31,782 | 38,622
Residential real estate: | 1-to-4 family mortgage |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 19,104 | 19,220
Provision for credit losses | 1,908 | 461
Recoveries of loans previously charged-off | 12 | 24
Loans charged off | 0 | (133)
Balance at end of period | 21,024 | 19,572
Residential real estate: | Residential line of credit |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 5,903 | 10,534
Provision for credit losses | 641 | (1,257)
Recoveries of loans previously charged-off | 1 | 6
Loans charged off | 0 | (15)
Balance at end of period | 6,545 | 9,268
Residential real estate: | Multi-family mortgage |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 6,976 | 7,174
Provision for credit losses | (578) | 4,483
Recoveries of loans previously charged-off | 0 | 0
Loans charged off | 0 | 0
Balance at end of period | 6,398 | 11,657
Commercial real estate: | Owner occupied |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 12,593 | 4,849
Provision for credit losses | (4,187) | (1,253)
Recoveries of loans previously charged-off | 10 | 13
Loans charged off | 0 | 0
Balance at end of period | 8,416 | 3,609
Commercial real estate: | Non-owner occupied |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 25,768 | 44,147
Provision for credit losses | (4,478) | 6,032
Recoveries of loans previously charged-off | 0 | 0
Loans charged off | 0 | 0
Balance at end of period | 21,290 | 50,179
Consumer and other |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at beginning of period | 10,888 | 11,240
Provision for credit losses | 1,365 | (315)
Recoveries of loans previously charged-off | 217 | 195
Loans charged off | (575) | (716)
Balance at end of period | $ 11,895 | $ 10,404

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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