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INVESTMENT SECURITIES - Summary of AFS Securities with Unrealized Losses (Details) $ in Thousands | Sep. 30, 2021 USD ($) security | Dec. 31, 2020 USD ($) security
--- | --- | ---
Number of Securities |  |
Less Than 12 Months | security | 29 | 7
12 Months or More | security | 3 | 25
Total | security | 32 | 32
Fair Value |  |
Less Than 12 Months | $ 153,459 | $ 54,268
12 Months or More | 36,067 | 225,564
Total | 189,526 | 279,832
Unrealized Losses |  |
Less Than 12 Months | 2,103 | 2,893
12 Months or More | 262 | 3,695
Total | $ 2,365 | $ 6,588
U.S. Treasury securities |  |
Number of Securities |  |
Less Than 12 Months | security | 3 |
12 Months or More | security | 0 |
Total | security | 3 |
Fair Value |  |
Less Than 12 Months | $ 19,831 |
12 Months or More | 0 |
Total | 19,831 |
Unrealized Losses |  |
Less Than 12 Months | 256 |
12 Months or More | 0 |
Total | $ 256 |
States and political subdivisions |  |
Number of Securities |  |
Less Than 12 Months | security | 11 | 1
12 Months or More | security | 0 | 0
Total | security | 11 | 1
Fair Value |  |
Less Than 12 Months | $ 40,666 | $ 9,079
12 Months or More | 0 | 0
Total | 40,666 | 9,079
Unrealized Losses |  |
Less Than 12 Months | 790 | 1,125
12 Months or More | 0 | 0
Total | $ 790 | $ 1,125
GSE residential MBSs |  |
Number of Securities |  |
Less Than 12 Months | security | 5 |
12 Months or More | security | 0 |
Total | security | 5 |
Fair Value |  |
Less Than 12 Months | $ 17,354 |
12 Months or More | 0 |
Total | 17,354 |
Unrealized Losses |  |
Less Than 12 Months | 114 |
12 Months or More | 0 |
Total | $ 114 |
GSE residential CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 7 | 3
12 Months or More | security | 0 | 0
Total | security | 7 | 3
Fair Value |  |
Less Than 12 Months | $ 43,267 | $ 23,954
12 Months or More | 0 | 0
Total | 43,267 | 23,954
Unrealized Losses |  |
Less Than 12 Months | 656 | 1,071
12 Months or More | 0 | 0
Total | $ 656 | $ 1,071
Non-agency CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 1 |
12 Months or More | security | 0 |
Total | security | 1 |
Fair Value |  |
Less Than 12 Months | $ 13,257 |
12 Months or More | 0 |
Total | 13,257 |
Unrealized Losses |  |
Less Than 12 Months | 273 |
12 Months or More | 0 |
Total | $ 273 |
Private label commercial CMOs |  |
Number of Securities |  |
Less Than 12 Months | security |  | 1
12 Months or More | security |  | 10
Total | security |  | 11
Fair Value |  |
Less Than 12 Months |  | $ 4,314
12 Months or More |  | 42,403
Total |  | 46,717
Unrealized Losses |  |
Less Than 12 Months |  | 685
12 Months or More |  | 1,077
Total |  | $ 1,762
Asset-backed |  |
Number of Securities |  |
Less Than 12 Months | security | 2 | 2
12 Months or More | security | 3 | 15
Total | security | 5 | 17
Fair Value |  |
Less Than 12 Months | $ 19,084 | $ 16,921
12 Months or More | 36,067 | 183,161
Total | 55,151 | 200,082
Unrealized Losses |  |
Less Than 12 Months | 14 | 12
12 Months or More | 262 | 2,618
Total | $ 276 | $ 2,630

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