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Investment Securities (Investment Securities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 497,450 $ 432,176
Available-for-sale Securities, Gross Unrealized Gains 14,873 14,472
Available-for-sale Securities, Gross Unrealized Losses 3,216 210
Available-for-sale Securities $ 509,107 $ 446,438
Available for sale - Weighted Average Yield 2.04% 1.96%
Held-to-maturity Amortized Cost $ 375,214 $ 0
Held-to-maturity Fair Value 371,827  
Pledged assets 276,900 150,800
Public Funds [Member]    
Schedule of Investments [Line Items]    
Pledged assets 210,500 146,400
Collateralized Mortgage Backed Securities [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost 483,250 418,976
Available-for-sale Securities, Gross Unrealized Gains 14,694 14,169
Available-for-sale Securities, Gross Unrealized Losses 3,216 210
Available-for-sale Securities $ 494,728 $ 432,935
Available for sale - Weighted Average Yield 2.04% 1.97%
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 194,957 $ 206,195
Available-for-sale Securities, Gross Unrealized Gains 3,330 4,786
Available-for-sale Securities, Gross Unrealized Losses 3,012 32
Available-for-sale Securities $ 195,275 $ 210,949
Available for sale - Weighted Average Yield 1.67% 1.78%
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member] | Due Less Than 1 Year [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost   $ 348
Available-for-sale Securities, Gross Unrealized Gains   16
Available-for-sale Securities, Gross Unrealized Losses   0
Available-for-sale Securities   $ 364
Available for sale - Weighted Average Yield   1.77%
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member] | Due From 5 To 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 93,940 $ 96,902
Available-for-sale Securities, Gross Unrealized Gains 3,219 3,741
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 97,159 $ 100,643
Available for sale - Weighted Average Yield 1.95% 2.00%
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member] | Due After 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 101,017 $ 108,945
Available-for-sale Securities, Gross Unrealized Gains 111 1,029
Available-for-sale Securities, Gross Unrealized Losses 3,012 32
Available-for-sale Securities $ 98,116 $ 109,942
Available for sale - Weighted Average Yield 1.40% 1.58%
Held-to-maturity Amortized Cost $ 375,214  
Held to maturity Securities Unrecognized Gains 34  
Held-to-maturity Securities, Unrecognized Loss 3,421  
Held-to-maturity Fair Value $ 371,827  
Held to maturity - Weighted Average Yield 1.73%  
Collateralized Mortgage Backed Securities [Member] | GNMA [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 261,288 $ 174,472
Available-for-sale Securities, Gross Unrealized Gains 10,744 8,478
Available-for-sale Securities, Gross Unrealized Losses 204 178
Available-for-sale Securities $ 271,828 $ 182,772
Available for sale - Weighted Average Yield 2.33% 2.21%
Collateralized Mortgage Backed Securities [Member] | GNMA [Member] | Due From 1 To 5 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 4,078 $ 469
Available-for-sale Securities, Gross Unrealized Gains 137 3
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 4,215 $ 472
Available for sale - Weighted Average Yield 1.46% 1.83%
Collateralized Mortgage Backed Securities [Member] | GNMA [Member] | Due From 5 To 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 38,961 $ 58,615
Available-for-sale Securities, Gross Unrealized Gains 1,133 1,466
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 40,094 $ 60,081
Available for sale - Weighted Average Yield 1.77% 1.80%
Collateralized Mortgage Backed Securities [Member] | GNMA [Member] | Due After 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 218,249 $ 115,388
Available-for-sale Securities, Gross Unrealized Gains 9,474 7,009
Available-for-sale Securities, Gross Unrealized Losses 204 178
Available-for-sale Securities $ 227,519 $ 122,219
Available for sale - Weighted Average Yield 2.45% 2.42%
Collateralized Mortgage Backed Securities [Member] | CMO's [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 27,005 $ 38,309
Available-for-sale Securities, Gross Unrealized Gains 620 905
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 27,625 $ 39,214
Available for sale - Weighted Average Yield 1.96% 1.96%
Collateralized Mortgage Backed Securities [Member] | CMO's [Member] | Due From 5 To 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 25,127 $ 32,220
Available-for-sale Securities, Gross Unrealized Gains 596 793
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 25,723 $ 33,013
Available for sale - Weighted Average Yield 1.80% 1.78%
Collateralized Mortgage Backed Securities [Member] | CMO's [Member] | Due After 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 1,878 $ 6,089
Available-for-sale Securities, Gross Unrealized Gains 24 112
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 1,902 $ 6,201
Available for sale - Weighted Average Yield 4.05% 2.95%
Securities Investment [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 14,200 $ 13,200
Available-for-sale Securities, Gross Unrealized Gains 179 303
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 14,379 $ 13,503
Available for sale - Weighted Average Yield 1.99% 1.53%
Securities Investment [Member] | US Treasury Securities [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 10,738 $ 10,740
Available-for-sale Securities, Gross Unrealized Gains 137 243
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 10,875 $ 10,983
Available for sale - Weighted Average Yield 1.49% 1.49%
Securities Investment [Member] | US Treasury Securities [Member] | Due Less Than 1 Year [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 10,738 $ 735
Available-for-sale Securities, Gross Unrealized Gains 137 0
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 10,875 $ 735
Available for sale - Weighted Average Yield 1.49% 0.10%
Securities Investment [Member] | US Treasury Securities [Member] | Due From 1 To 5 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost   $ 10,005
Available-for-sale Securities, Gross Unrealized Gains   243
Available-for-sale Securities, Gross Unrealized Losses   0
Available-for-sale Securities   $ 10,248
Available for sale - Weighted Average Yield   1.59%
Securities Investment [Member] | Obligation of US Government Sponsored Agencies [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 1,275 $ 1,585
Available-for-sale Securities, Gross Unrealized Gains 5 21
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 1,280 $ 1,606
Available for sale - Weighted Average Yield 1.40% 1.39%
Securities Investment [Member] | Obligation of US Government Sponsored Agencies [Member] | Due Less Than 1 Year [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 1,275  
Available-for-sale Securities, Gross Unrealized Gains 5  
Available-for-sale Securities, Gross Unrealized Losses 0  
Available-for-sale Securities $ 1,280  
Available for sale - Weighted Average Yield 1.40%  
Securities Investment [Member] | Obligation of US Government Sponsored Agencies [Member] | Due From 1 To 5 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost   $ 1,585
Available-for-sale Securities, Gross Unrealized Gains   21
Available-for-sale Securities, Gross Unrealized Losses   0
Available-for-sale Securities   $ 1,606
Available for sale - Weighted Average Yield   1.39%
Securities Investment [Member] | Other Debt Obligations [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 2,187 $ 875
Available-for-sale Securities, Gross Unrealized Gains 37 39
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 2,224 $ 914
Available for sale - Weighted Average Yield 4.78% 2.31%
Securities Investment [Member] | Other Debt Obligations [Member] | Due Less Than 1 Year [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 250 $ 251
Available-for-sale Securities, Gross Unrealized Gains 0 0
Available-for-sale Securities, Gross Unrealized Losses 0 0
Available-for-sale Securities $ 250 $ 251
Available for sale - Weighted Average Yield 0.65% 0.65%
Securities Investment [Member] | Other Debt Obligations [Member] | Due From 1 To 5 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost $ 1,937  
Available-for-sale Securities, Gross Unrealized Gains 37  
Available-for-sale Securities, Gross Unrealized Losses 0  
Available-for-sale Securities $ 1,974  
Available for sale - Weighted Average Yield 5.31%  
Securities Investment [Member] | Other Debt Obligations [Member] | Due From 5 To 10 Years [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Amortized Cost   $ 624
Available-for-sale Securities, Gross Unrealized Gains   39
Available-for-sale Securities, Gross Unrealized Losses   0
Available-for-sale Securities   $ 663
Available for sale - Weighted Average Yield   2.97%