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Derivatives (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Mar. 03, 2020 | Jan. 02, 2020 | Apr. 13, 2017
Notional Amount of Interest Rate Cash Flow Hedge Derivatives | $ 200.0 |  | $ 200.0 |  | $ 25.0 | $ 25.0 | $ 25.0
Interest expense on derivatives | $ 0.3 | $ 0.6 | $ 1.5 | $ 0.9 |  |  |
Minimum [Member] |  |  |  |  |  |  |
Federal Home Loan Bank advance Fixed-rates of interest | 0.631% |  | 0.88% |  |  |  |
Expiration dates | Mar. 31, 2026 |  | Jan. 31, 2022 |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Federal Home Loan Bank advance Fixed-rates of interest | 0.955% |  | 1.93% |  |  |  |
Expiration dates | Jan. 31, 2028 |  | Apr. 30, 2022 |  |  |  |

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- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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