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Allowance for Loan and Lease Losses - Activity in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
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Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |
Individually | $ 15,539 | $ 14,153 | $ 15,242
Collectively | 1,782,486 | 1,748,412 | 1,735,747
Total Financing Receivables | 1,798,025 | 1,762,565 | 1,750,989
Real Estate Sector [Member] |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |
Individually | 13,753 | 12,746 | 13,348
Collectively | 1,387,435 | 1,389,368 | 1,460,502
Total Financing Receivables | 1,401,188 | 1,402,114 | 1,473,850
Agricultural Sector [Member] |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |
Individually | 5 | 5 | 6
Collectively | 49,194 | 48,031 | 52,080
Total Financing Receivables | 49,199 | 48,036 | 52,086
Commercial and Industrial and Mortgage Warehouse Sector [Member] |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |
Individually | 1,405 | 977 | 1,099
Collectively | 339,193 | 303,658 | 215,698
Total Financing Receivables | 340,598 | 304,635 | 216,797
Consumer Loans Sector [Member] |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |
Individually | 376 | 425 | 789
Collectively | 6,664 | 7,355 | 7,467
Total Financing Receivables | $ 7,040 | $ 7,780 | $ 8,256

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- Definition The balance of financing receivables that were collectively evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
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