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Long-Term Borrowings - Schedules of long-term Borrowings (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Feb. 26, 2020 | Jul. 26, 2016 | Aug. 05, 2014
--- | --- | --- | --- | --- | ---
Long-Term Borrowings |  |  |  |  |
Less: unamortized debt issuance costs | $ (1,825) | $ (1,923) |  |  |
Long-term borrowings | 218,175 | 268,077 |  |  |
Subordinated Notes, 5.75% |  |  |  |  |
Long-Term Borrowings |  |  |  |  |
Long-term borrowings, gross | $ 70,000 | 70,000 |  |  |
Interest rate (as a percent) | 5.75% |  |  |  | 5.75%
Subordinated Notes, 5.0% |  |  |  |  |
Long-Term Borrowings |  |  |  |  |
Long-term borrowings, gross | $ 150,000 | 150,000 |  |  |
Interest rate (as a percent) | 5.00% |  |  | 5.00% |
FHLB Advance, 1.81% |  |  |  |  |
Long-Term Borrowings |  |  |  |  |
Long-term borrowings, gross | $ 0 | $ 50,000 | $ 50,000 |  |
Interest rate (as a percent) |  |  | 1.81% |  |

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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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