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INVESTMENT SECURITIES AVAILABLE FOR SALE (Schedule of Available for Sale Securities with Continuous Unrealized Losses and Approximate Fair Value of Investments) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Approximate Fair Value |  |
Less Than 12 Months | $ 216,829 | $ 99,523
12 Months or Longer | 16,009 | 71,926
Total | 232,838 | 171,449
Unrealized Losses |  |
Less Than 12 Months | (1,428) | (597)
12 Months or Longer | (47) | (583)
Total | (1,475) | (1,180)
12 Months or Longer | 16,009 | 71,926
Total | 232,838 | 171,449
U.S. Government-Sponsored Agencies [Member] |  |
Approximate Fair Value |  |
Less Than 12 Months | 73,769 | 19,758
12 Months or Longer | 0 | 0
Total | 73,769 | 19,758
Unrealized Losses |  |
Less Than 12 Months | (655) | (214)
12 Months or Longer | 0 | 0
Total | (655) | (214)
12 Months or Longer | 0 | 0
Total | 73,769 | 19,758
Mortgage-Backed Securities-Residential [Member] |  |
Approximate Fair Value |  |
Less Than 12 Months | 103,340 | 78,982
12 Months or Longer | 13,914 | 69,142
Total | 117,254 | 148,124
Unrealized Losses |  |
Less Than 12 Months | (430) | (382)
12 Months or Longer | (31) | (568)
Total | (461) | (950)
12 Months or Longer | 13,914 | 69,142
Total | 117,254 | 148,124
SBA Pool Securities [Member] |  |
Approximate Fair Value |  |
Less Than 12 Months | 39,720 | 0
12 Months or Longer | 2,095 | 2,784
Total | 41,815 | 2,784
Unrealized Losses |  |
Less Than 12 Months | (343) | 0
12 Months or Longer | (16) | (15)
Total | (359) | (15)
12 Months or Longer | 2,095 | 2,784
Total | $ 41,815 | 2,784
State and Political Subdivisions [Member] |  |
Approximate Fair Value |  |
Less Than 12 Months |  | 783
12 Months or Longer |  | 0
Total |  | 783
Unrealized Losses |  |
Less Than 12 Months |  | (1)
12 Months or Longer |  | 0
Total |  | (1)
12 Months or Longer |  | 0
Total |  | $ 783

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