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Investment Securities (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | $ 459,527 | $ 345,580
Available-for-sale Securities | 468,951 | 359,866
Available-for-sale Securities, Gross Unrealized Gain | 11,696 | 14,554
Available-for-sale Securities, Gross Unrealized Loss | 2,272 | 268
US Treasury Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 15,722 | 1,501
Available-for-sale Securities | 15,448 | 1,502
Available-for-sale Securities, Gross Unrealized Gain |  | 1
Available-for-sale Securities, Gross Unrealized Loss | 274 | 0
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 317,506 | 222,739
Available-for-sale Securities | 321,241 | 229,929
Available-for-sale Securities, Gross Unrealized Gain | 5,377 | 7,375
Available-for-sale Securities, Gross Unrealized Loss | 1,642 | 185
Small Business Administration pools [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 35,558 | 34,577
Available-for-sale Securities | 36,225 | 35,498
Available-for-sale Securities, Gross Unrealized Gain | 728 | 928
Available-for-sale Securities, Gross Unrealized Loss | 61 | 7
US States and Political Subdivisions Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 84,216 | 82,495
Available-for-sale Securities | 89,338 | 88,603
Available-for-sale Securities, Gross Unrealized Gain | 5,417 | 6,184
Available-for-sale Securities, Gross Unrealized Loss | 295 | 76
Corporate and other securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 6,525 | 3,272
Available-for-sale Securities | 6,699 | 3,328
Available-for-sale Securities, Gross Unrealized Gain | 174 | 56
Available-for-sale Securities, Gross Unrealized Loss | $ 0 | 0
US Government-sponsored Enterprises Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis |  | 996
Available-for-sale Securities |  | 1,006
Available-for-sale Securities, Gross Unrealized Gain |  | 10
Available-for-sale Securities, Gross Unrealized Loss |  | $ 0

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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