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SECURITIES AVAILABLE FOR SALE - Summary of Securities Available For Sale With Unrealized Losses (Detail) $ in Thousands | Dec. 31, 2018 USD ($) security | Dec. 31, 2017 USD ($) security
--- | --- | ---
Number of Securities |  |
Less Than 12 Months | security | 46 | 19
12 Months or More | security | 18 | 6
Total | security | 64 | 25
Fair Value |  |
Less Than 12 Months | $ 200,164 | $ 117,391
12 Months or More | 86,361 | 43,044
Total | 286,525 | 160,435
Unrealized Losses |  |
Less Than 12 Months | 2,356 | 1,968
12 Months or More | 3,839 | 1,926
Total | $ 6,195 | $ 3,894
States and political subdivisions |  |
Number of Securities |  |
Less Than 12 Months | security | 27 | 7
12 Months or More | security | 6 | 1
Total | security | 33 | 8
Fair Value |  |
Less Than 12 Months | $ 46,585 | $ 24,577
12 Months or More | 23,036 | 5,585
Total | 69,621 | 30,162
Unrealized Losses |  |
Less Than 12 Months | 662 | 473
12 Months or More | 849 | 5
Total | $ 1,511 | $ 478
GSE residential CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 1 | 4
12 Months or More | security | 7 | 5
Total | security | 8 | 9
Fair Value |  |
Less Than 12 Months | $ 18,037 | $ 25,155
12 Months or More | 46,168 | 37,459
Total | 64,205 | 62,614
Unrealized Losses |  |
Less Than 12 Months | 122 | 914
12 Months or More | 2,567 | 1,921
Total | $ 2,689 | $ 2,835
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 | 11 | 2
12 Months or More | security | 2 | 0
Total | security | 13 | 2
Fair Value |  |
Less Than 12 Months | $ 56,499 | $ 7,653
12 Months or More | 6,349 | 0
Total | 62,848 | 7,653
Unrealized Losses |  |
Less Than 12 Months | 712 | 156
12 Months or More | 209 | 0
Total | $ 921 | $ 156
Asset-backed and other |  |
Number of Securities |  |
Less Than 12 Months | security | 6 | 6
12 Months or More | security | 3 | 0
Total | security | 9 | 6
Fair Value |  |
Less Than 12 Months | $ 78,900 | $ 60,006
12 Months or More | 10,808 | 0
Total | 89,708 | 60,006
Unrealized Losses |  |
Less Than 12 Months | 859 | 425
12 Months or More | 214 | 0
Total | $ 1,073 | $ 425

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