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Borrowings and Related Interest (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2003
Debt Instrument [Line Items] |  |  |
Repurchase agreements matured and not renewed | $ 140,000,000 |  |
Subordinated Debt | 36,083,000 | $ 36,083,000 |
Trust redeemable preferred securities issued |  |  | $ 35,000,000.0
Extinguishment of debt amount | 50,000,000 |  |
Repurchase Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt outstanding | 0 |  |
Federal Home Loan Bank Advances [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Loans pledged as collateral to secure FHLB advances | 1,159,000,000 | 1,060,000,000.000 |
Additional Borrowing Capacity | $ 814,000,000 | $ 983,000,000 |
Weighted average period remaining maturity of FHLB advances | 18 months 6 days | 22 months 21 days |
Interest payable | $ 96,000 | $ 160,000 |
Minimum amount of qualifying collateral | 110.00% |  |
Junior Subordinated Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Effective interest rate | 3.18% | 4.85% |
Face amount | $ 36,100,000 |  |
Debt Instrument Interest Rate Terms | 3-month LIBOR plus 295 basis points |  |
Debt Instrument Basis Spread On Variable Rate | 2.95% |  |
Minimum [Member] | Federal Home Loan Bank Advances [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument term | 1 day |  |
Maximum [Member] | Federal Home Loan Bank Advances [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument term | 7 years |  |

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- Definition Total amount of debt due to new repurchase agreements contracts or unwind. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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