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Loans - Schedule of Loans Renegotiated in Troubled Debt Restructurings (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Loans renegotiated in troubled debt restructurings | $ 29,400,000 |  | $ 29,400,000 |  | $ 44,500,000
Loans renegotiated in troubled debt restructurings, non-accrual loans | 22,200,000 |  | 22,200,000 |  | 31,900,000
Loans renegotiated in troubled debt restructurings, accrual loans | 7,200,000 |  | 7,200,000 |  | $ 12,600,000
Loans restructured during period |  |  | 0 |  |
Charge-offs directly related to modifying troubled debt restructurings | 0 | $ 0 | 0 | $ 0 |
Balance of defaulted loans under trouble debt restructurings |  |  | 0 |  |
Commitments to lend additional funds | $ 0 |  | $ 0 |  |

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- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524 + Details
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