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Loans - Schedule of Loan Assigned Risk Rating within 12 Months of Balance Sheet Date (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | $ 2,828,745 | $ 2,784,562
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 1,849,262 | 1,785,243
Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 35,832 | 35,533
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 52,036 | 39,891
Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 0 | 0
Pass, Special Mention, Substandard, Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 1,937,130 | 1,860,667
Commercial, industrial and agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 1,090,915 | 1,046,665
Commercial, industrial and agricultural | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 1,049,414 | 1,004,445
Commercial, industrial and agricultural | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 13,444 | 16,696
Commercial, industrial and agricultural | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 28,057 | 25,524
Commercial, industrial and agricultural | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 0 | 0
Commercial mortgages |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 846,215 | 814,002
Commercial mortgages | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 799,848 | 780,798
Commercial mortgages | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 22,388 | 18,837
Commercial mortgages | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | 23,979 | 14,367
Commercial mortgages | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans | $ 0 | $ 0

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- Definition Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -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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