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Derivatives and Hedging Activities (Textual) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Derivative [Line Items] |  |  |  |
Derivative, Net Liability Position, Aggregate Fair Value |  | $ 26,000,000.0 | $ 176,000 |
Derivative, Collateral, Right to Reclaim Cash |  | 25,493,000 | 173,000 |
Increase (Decrease) in Loans Held-for-sale |  | 822,000 | (51,000) | $ (113,000)
Net amortization income |  | 0 | 231,000 | 244,000
Exposure to Institutional Counterparties |  | $ 25,400,000 | 18,400,000 |
Maximum length of time Company is currently hedging its exposure |  | 4 years 10 months 24 days |  |
Customer related positions |  | $ 51,000,000.0 | 6,400,000 |
Gain (Loss) on Sales of Loans, Net | $ 951,000 | 13,200,000 | $ 3,600,000 | $ 4,700,000
Fair Value Hedges, Net |  | 0 |  |
Interest Income [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Interest expense |  | 6,000,000.0 |  |
Interest Expense [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Interest expense |  | 150,000 |  |
CME [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, Collateral, Right to Reclaim Cash |  | $ 1,300,000 |  |

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- Definition The amount of expense charged against earnings by an entity to record deferred gains and losses on hedge instruments. + References No definition available. + Details
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- Definition Change in Fair Value on Loans Held for Sale + References No definition available. + Details
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- Definition Exposure to counterparties relating to customer related positions. + References No definition available. + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994 + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 + Details
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