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v3.20.4

Securities (FY) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 USD ($) security | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) security | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) security | Dec. 31, 2018 USD ($) security
Available-for-Sale Investment Securities Portfolios [Abstract] |  |  |  |  |  |
Amortized Cost | $ 9,882 |  | $ 9,882 |  | $ 10,806 | $ 14,892
Gross Unrealized Gains | 490 |  | 490 |  | 200 | 88
Gross Unrealized Losses | 0 |  | 0 |  | 0 | (258)
Fair Value | 10,372 |  | 10,372 |  | 11,006 | 14,722
Federal agency debt securities matured |  |  | 1,744 | $ 1,450 | 4,055 | 2,444
Securities pledged to secure public deposits | 0 |  | 0 |  | 0 | 0
Securities of any one issuer, other than U.S. Government, greater than 10% of stockholders' equity | 0 |  | 0 |  | 0 | 0
Sales of securities | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0
Number of securities held with unrealized gains | security | 26 |  | 26 |  | 24 | 0
Number of securities held with unrealized losses | security |  |  |  |  | 0 | 10
Federal Agency Mortgage-backed Securities [Member] |  |  |  |  |  |
Available-for-Sale Investment Securities Portfolios [Abstract] |  |  |  |  |  |
Amortized Cost | $ 6,182 |  | $ 6,182 |  | $ 7,792 | $ 9,575
Gross Unrealized Gains | 278 |  | 278 |  | 164 | 88
Gross Unrealized Losses | 0 |  | 0 |  | 0 | (155)
Fair Value | $ 6,460 |  | $ 6,460 |  | $ 7,956 | 9,508
Number of securities held | security | 22 |  | 22 |  | 22 |
Estimated average remaining life |  |  | 2 years 10 months 24 days |  | 4 years 4 months 24 days |
Federal Agency Debt [Member] |  |  |  |  |  |
Available-for-Sale Investment Securities Portfolios [Abstract] |  |  |  |  |  |
Amortized Cost | $ 2,850 |  | $ 2,850 |  | $ 3,014 | 5,317
Gross Unrealized Gains | 208 |  | 208 |  | 36 | 0
Gross Unrealized Losses | 0 |  | 0 |  | 0 | (103)
Fair Value | $ 3,058 |  | $ 3,058 |  | $ 3,050 | $ 5,214
Number of securities held | security | 4 |  | 4 |  | 2 |
Estimated average remaining life |  |  | 5 years 7 months 6 days |  | 5 years 7 months 6 days |
Number of securities matured | security |  |  |  |  | 1 |
Federal agency debt securities matured |  |  |  |  | $ 2,000 |

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