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Investment Securities (Investment Securities) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 462,115 | $ 432,176
Available-for-sale Securities, Gross Unrealized Gains | 12,647 | 14,472
Available-for-sale Securities, Gross Unrealized Losses | 3,753 | 210
Available-for-sale Securities | $ 471,009 | $ 446,438
Available for sale - Weighted Average Yield | 1.94% | 1.96%
Held-to-maturity Fair Value | $ 125,478 |
Collateralized Mortgage Backed Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | 449,041 | $ 418,976
Available-for-sale Securities, Gross Unrealized Gains | 12,385 | 14,169
Available-for-sale Securities, Gross Unrealized Losses | 3,753 | 210
Available-for-sale Securities | $ 457,673 | $ 432,935
Available for sale - Weighted Average Yield | 1.95% | 1.97%
Held-to-maturity, Amortized cost | $ 126,767 |
Held to maturity Securities Unrecognized Gains | 0 |
Held-to-maturity Securities, Unrecognized Loss | 1,289 |
Held-to-maturity Fair Value | $ 125,478 |
Held to maturity - Weighted Average Yield | 1.21% |
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 220,735 | $ 206,195
Available-for-sale Securities, Gross Unrealized Gains | 3,854 | 4,786
Available-for-sale Securities, Gross Unrealized Losses | 3,593 | 32
Available-for-sale Securities | $ 220,996 | $ 210,949
Available for sale - Weighted Average Yield | 1.73% | 1.78%
Collateralized Mortgage Backed Securities [Member] | GNMA [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 193,884 | $ 174,472
Available-for-sale Securities, Gross Unrealized Gains | 7,624 | 8,478
Available-for-sale Securities, Gross Unrealized Losses | 160 | 178
Available-for-sale Securities | $ 201,348 | $ 182,772
Available for sale - Weighted Average Yield | 2.20% | 2.21%
Collateralized Mortgage Backed Securities [Member] | CMO's [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 34,422 | $ 38,309
Available-for-sale Securities, Gross Unrealized Gains | 907 | 905
Available-for-sale Securities, Gross Unrealized Losses | 0 | 0
Available-for-sale Securities | $ 35,329 | $ 39,214
Available for sale - Weighted Average Yield | 1.96% | 1.96%
Securities Investment [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 13,074 | $ 13,200
Available-for-sale Securities, Gross Unrealized Gains | 262 | 303
Available-for-sale Securities, Gross Unrealized Losses | 0 | 0
Available-for-sale Securities | $ 13,336 | $ 13,503
Available for sale - Weighted Average Yield | 1.53% | 1.53%
Held-to-maturity Fair Value | $ 0 |
Securities Investment [Member] | US Treasury Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | 10,739 | $ 10,740
Available-for-sale Securities, Gross Unrealized Gains | 207 | 243
Available-for-sale Securities, Gross Unrealized Losses | 0 | 0
Available-for-sale Securities | $ 10,946 | $ 10,983
Available for sale - Weighted Average Yield | 1.49% | 1.49%
Securities Investment [Member] | Obligation of US Government Sponsored Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 1,496 | $ 1,585
Available-for-sale Securities, Gross Unrealized Gains | 16 | 21
Available-for-sale Securities, Gross Unrealized Losses | 0 | 0
Available-for-sale Securities | $ 1,512 | $ 1,606
Available for sale - Weighted Average Yield | 1.39% | 1.39%
Securities Investment [Member] | Other Debt Obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale Amortized Cost | $ 839 | $ 875
Available-for-sale Securities, Gross Unrealized Gains | 39 | 39
Available-for-sale Securities, Gross Unrealized Losses | 0 | 0
Available-for-sale Securities | $ 878 | $ 914
Available for sale - Weighted Average Yield | 2.28% | 2.31%

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