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SECURITIES - Investments in a Continuous Unrealized Loss Position (Details) $ in Thousands | Sep. 30, 2021 USD ($) item | Dec. 31, 2020 USD ($)
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Available-for-sale: Unrealized Loss |  |
Less than 12 Months | $ (5,689) | $ (1,061)
12 Months or More | (1,115) | (30)
Total Unrealized Loss of Available-for-sale securities | (6,804) | (1,091)
Held-to-maturity: Unrealized Loss |  |
Less than 12 Months | (1,609) | (18)
12 Months or More | (120) |
Total Unrealized Loss of Held-to-maturity securities | (1,729) | (18)
Available-for-sale: Fair Value |  |
Less than 12 Months | 329,108 | 107,933
12 Months or More | 28,622 | 7,939
Total Fair Value Available-for-sale securities | 357,730 | 115,872
Held-to-maturity: Fair value |  |
Less than 12 Months | 134,271 | 2,983
12 Months or More | 2,793 |
Total Fair Value Held-to-maturity securities | 137,064 | 2,983
Total: Unrealized Losses |  |
Less Than 12 Months | (7,298) | (1,079)
12 Months or More | (1,235) | (30)
Total Unrealized Losses | (8,533) | (1,109)
Total: Fair Value |  |
Less than 12 Months | 463,379 | 110,916
12 Months or More | 31,415 | 7,939
Total Fair Value | $ 494,794 | 118,855
Number of securities in an unrealized loss position for a period of twelve months or more | item | 32 |
Number of securities in an unrealized loss position for a period of less than twelve months | item | 189 |
U.S. Treasury |  |
Available-for-sale: Unrealized Loss |  |
Less than 12 Months | $ (22) |
Total Unrealized Loss of Available-for-sale securities | (22) |
Available-for-sale: Fair Value |  |
Less than 12 Months | 9,926 |
Total Fair Value Available-for-sale securities | 9,926 |
U.S. government agency |  |
Available-for-sale: Unrealized Loss |  |
Less than 12 Months | (2,295) | (9)
Total Unrealized Loss of Available-for-sale securities | (2,295) | (9)
Held-to-maturity: Unrealized Loss |  |
Less than 12 Months | (12) |
Total Unrealized Loss of Held-to-maturity securities | (12) |
Available-for-sale: Fair Value |  |
Less than 12 Months | 70,210 | 5,919
Total Fair Value Available-for-sale securities | 70,210 | 5,919
Held-to-maturity: Fair value |  |
Less than 12 Months | 4,988 |
Total Fair Value Held-to-maturity securities | 4,988 |
Municipal securities |  |
Available-for-sale: Unrealized Loss |  |
Less than 12 Months | (2,066) | (280)
12 Months or More | (670) |
Total Unrealized Loss of Available-for-sale securities | (2,736) | (280)
Available-for-sale: Fair Value |  |
Less than 12 Months | 112,240 | 19,652
12 Months or More | 12,406 |
Total Fair Value Available-for-sale securities | 124,646 | 19,652
Mortgage-backed: Agency residential |  |
Available-for-sale: Unrealized Loss |  |
Less than 12 Months | (323) | (142)
12 Months or More | (48) | (20)
Total Unrealized Loss of Available-for-sale securities | (371) | (162)
Held-to-maturity: Unrealized Loss |  |
Less than 12 Months | (1) |
Total Unrealized Loss of Held-to-maturity securities | (1) |
Available-for-sale: Fair Value |  |
Less than 12 Months | 47,264 | 20,387
12 Months or More | 4,649 | 4,490
Total Fair Value Available-for-sale securities | 51,913 | 24,877
Held-to-maturity: Fair value |  |
Less than 12 Months | 1,570 |
Total Fair Value Held-to-maturity securities | 1,570 |
Mortgage-backed: Agency commercial |  |
Available-for-sale: Unrealized Loss |  |
Less than 12 Months | (983) | (524)
12 Months or More | (117) | (10)
Total Unrealized Loss of Available-for-sale securities | (1,100) | (534)
Held-to-maturity: Unrealized Loss |  |
Less than 12 Months | (1,596) | (18)
12 Months or More | (120) |
Total Unrealized Loss of Held-to-maturity securities | (1,716) | (18)
Available-for-sale: Fair Value |  |
Less than 12 Months | 89,468 | 57,126
12 Months or More | 6,888 | 3,449
Total Fair Value Available-for-sale securities | 96,356 | 60,575
Held-to-maturity: Fair value |  |
Less than 12 Months | 127,713 | 2,983
12 Months or More | 2,793 |
Total Fair Value Held-to-maturity securities | 130,506 | 2,983
Corporate |  |
Available-for-sale: Unrealized Loss |  |
Less than 12 Months |  | (106)
12 Months or More | (280) |
Total Unrealized Loss of Available-for-sale securities | (280) | (106)
Available-for-sale: Fair Value |  |
Less than 12 Months |  | 4,849
12 Months or More | 4,679 |
Total Fair Value Available-for-sale securities | $ 4,679 | $ 4,849

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