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SECURITIES AVAILABLE FOR SALE - Summary of Securities Available For Sale With Unrealized Losses (Detail) $ in Thousands | Dec. 31, 2019 USD ($) security | Dec. 31, 2018 USD ($) security | Dec. 31, 2017 USD ($) security
--- | --- | --- | ---
Number of Securities |  |  |
Less Than 12 Months | security | 22 | 46 |
12 Months or More | security | 18 | 18 |
Total | security | 40 | 64 |
Fair Value |  |  |
Less Than 12 Months | $ 178,686 | $ 200,164 |
12 Months or More | 172,727 | 86,361 |
Total | 351,413 | 286,525 |
Unrealized Losses |  |  |
Less Than 12 Months | 1,676 | 2,356 |
12 Months or More | 4,513 | 3,839 |
Total | $ 6,189 | $ 6,195 |
States and political subdivisions |  |  |
Number of Securities |  |  |
Less Than 12 Months | security | 1 | 27 |
12 Months or More | security | 0 | 6 |
Total | security | 1 | 33 |
Fair Value |  |  |
Less Than 12 Months | $ 6,173 | $ 46,585 |
12 Months or More | 0 | 23,036 |
Total | 6,173 | 69,621 |
Unrealized Losses |  |  |
Less Than 12 Months | 32 | 662 |
12 Months or More | 0 | 849 |
Total | $ 32 | $ 1,511 |
GSE residential CMOs |  |  |
Number of Securities |  |  |
Less Than 12 Months | security | 5 | 1 |
12 Months or More | security | 1 | 7 |
Total | security | 6 | 8 |
Fair Value |  |  |
Less Than 12 Months | $ 37,158 | $ 18,037 |
12 Months or More | 11,602 | 46,168 |
Total | 48,760 | 64,205 |
Unrealized Losses |  |  |
Less Than 12 Months | 309 | 122 |
12 Months or More | 465 | 2,567 |
Total | $ 774 | $ 2,689 |
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 | $ 17,087 |  |
12 Months or More | 0 |  |
Total | 17,087 |  |
Unrealized Losses |  |  |
Less Than 12 Months | 123 |  |
12 Months or More | 0 |  |
Total | $ 123 |  |
Private label residential 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 |  |  | $ 143
12 Months or More |  |  | 0
Total |  |  | 143
Unrealized Losses |  |  |
Less Than 12 Months |  |  | 1
12 Months or More |  |  | 0
Total |  |  | $ 1
Private label commercial CMOs |  |  |
Number of Securities |  |  |
Less Than 12 Months | security | 6 | 11 |
12 Months or More | security | 8 | 2 |
Total | security | 14 | 13 |
Fair Value |  |  |
Less Than 12 Months | $ 26,079 | $ 56,499 |
12 Months or More | 39,726 | 6,349 |
Total | 65,805 | 62,848 |
Unrealized Losses |  |  |
Less Than 12 Months | 67 | 712 |
12 Months or More | 164 | 209 |
Total | $ 231 | $ 921 |
Asset-backed and other |  |  |
Number of Securities |  |  |
Less Than 12 Months | security | 9 | 6 |
12 Months or More | security | 9 | 3 |
Total | security | 18 | 9 |
Fair Value |  |  |
Less Than 12 Months | $ 92,189 | $ 78,900 |
12 Months or More | 121,399 | 10,808 |
Total | 213,588 | 89,708 |
Unrealized Losses |  |  |
Less Than 12 Months | 1,145 | 859 |
12 Months or More | 3,884 | 214 |
Total | $ 5,029 | $ 1,073 |

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