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Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | $ 37,017 | $ 46,859
Allowance from PCD Loans Acquired in the Current Period | 3,117 |
Provision (Benefit) for credit loss expense | 5,200 | (1,500)
Loans charged-off | (369) | (372)
Recoveries collected | 113 | 112
Total ending allowance balance | 45,078 | 45,099
Commercial and Industrial Loans |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 9,554 | 6,445
Allowance from PCD Loans Acquired in the Current Period | 376 |
Provision (Benefit) for credit loss expense | 2,788 | (22)
Loans charged-off | (5) | (190)
Recoveries collected | 7 | 15
Total ending allowance balance | 12,720 | 6,248
Commercial Real Estate Loans |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 19,245 | 29,878
Allowance from PCD Loans Acquired in the Current Period | 1,945 |
Provision (Benefit) for credit loss expense | 2,095 | (1,334)
Loans charged-off | (78) | (9)
Recoveries collected | 10 | 5
Total ending allowance balance | 23,217 | 28,540
Agricultural Loans |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 4,505 | 6,756
Allowance from PCD Loans Acquired in the Current Period | 689 |
Provision (Benefit) for credit loss expense | (435) | (294)
Loans charged-off | 0 | 0
Recoveries collected | 0 | 0
Total ending allowance balance | 4,759 | 6,462
Leases |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 200 | 200
Allowance from PCD Loans Acquired in the Current Period | 0 |
Provision (Benefit) for credit loss expense | (4) | 1
Loans charged-off | 0 | 0
Recoveries collected | 0 | 0
Total ending allowance balance | 196 | 201
Consumer Loans |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 507 | 490
Allowance from PCD Loans Acquired in the Current Period | 2 |
Provision (Benefit) for credit loss expense | 225 | (18)
Loans charged-off | (210) | (125)
Recoveries collected | 92 | 92
Total ending allowance balance | 616 | 439
Home Equity Loans |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 1,061 | 996
Allowance from PCD Loans Acquired in the Current Period | 0 |
Provision (Benefit) for credit loss expense | 183 | (31)
Loans charged-off | (37) | 0
Recoveries collected | 0 | 0
Total ending allowance balance | 1,207 | 965
Credit Cards |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 240 | 150
Allowance from PCD Loans Acquired in the Current Period | 0 |
Provision (Benefit) for credit loss expense | 7 | 59
Loans charged-off | (39) | (47)
Recoveries collected | 4 | 0
Total ending allowance balance | 212 | 162
Residential Mortgage Loans |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 1,705 | 1,944
Allowance from PCD Loans Acquired in the Current Period | 105 |
Provision (Benefit) for credit loss expense | 341 | 139
Loans charged-off | 0 | (1)
Recoveries collected | 0 | 0
Total ending allowance balance | 2,151 | 2,082
Unallocated |  |
Allowance for Credit Losses [Roll Forward] |  |
Beginning balance | 0 | 0
Allowance from PCD Loans Acquired in the Current Period | 0 |
Provision (Benefit) for credit loss expense | 0 | 0
Loans charged-off | 0 | 0
Recoveries collected | 0 | 0
Total ending allowance balance | $ 0 | $ 0

X
- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + 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 purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + 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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