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SECURITIES AVAILABLE FOR SALE - Summary of Securities Available For Sale With Unrealized Losses (Detail) $ in Thousands | Dec. 31, 2017 USD ($) security | Dec. 31, 2016 USD ($) security
--- | --- | ---
Number of Securities |  |
Less Than 12 Months | security | 19 | 39
12 Months or More | security | 6 | 7
Total | security | 25 | 46
Fair Value |  |
Less Than 12 Months | $ 117,391 | $ 139,058
12 Months or More | 43,044 | 24,245
Total | 160,435 | 163,303
Unrealized Losses |  |
Less Than 12 Months | 1,968 | 4,195
12 Months or More | 1,926 | 708
Total | $ 3,894 | $ 4,903
U.S. Government Agencies |  |
Number of Securities |  |
Less Than 12 Months | security |  | 6
12 Months or More | security |  | 2
Total | security |  | 8
Fair Value |  |
Less Than 12 Months |  | $ 10,710
12 Months or More |  | 13,531
Total |  | 24,241
Unrealized Losses |  |
Less Than 12 Months |  | 23
12 Months or More |  | 101
Total |  | $ 124
States and political subdivisions |  |
Number of Securities |  |
Less Than 12 Months | security | 7 | 25
12 Months or More | security | 1 | 1
Total | security | 8 | 26
Fair Value |  |
Less Than 12 Months | $ 24,577 | $ 58,924
12 Months or More | 5,585 | 5,075
Total | 30,162 | 63,999
Unrealized Losses |  |
Less Than 12 Months | 473 | 610
12 Months or More | 5 | 567
Total | $ 478 | $ 1,177
GSE residential MBSs |  |
Number of Securities |  |
Less Than 12 Months | security |  | 1
12 Months or More | security |  | 0
Total | security |  | 1
Fair Value |  |
Less Than 12 Months |  | $ 5,034
12 Months or More |  | 0
Total |  | 5,034
Unrealized Losses |  |
Less Than 12 Months |  | 6
12 Months or More |  | 0
Total |  | $ 6
GSE residential CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 4 | 6
12 Months or More | security | 5 | 1
Total | security | 9 | 7
Fair Value |  |
Less Than 12 Months | $ 25,155 | $ 59,534
12 Months or More | 37,459 | 634
Total | 62,614 | 60,168
Unrealized Losses |  |
Less Than 12 Months | 914 | 3,264
12 Months or More | 1,921 | 4
Total | $ 2,835 | $ 3,268
GSE commercial 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 |  | $ 4,856
12 Months or More |  | 0
Total |  | 4,856
Unrealized Losses |  |
Less Than 12 Months |  | 292
12 Months or More |  | 0
Total |  | $ 292
Private label commercial CMOs |  |
Number of Securities |  |
Less Than 12 Months | security | 2 |
12 Months or More | security | 0 |
Total | security | 2 |
Fair Value |  |
Less Than 12 Months | $ 7,653 |
12 Months or More | 0 |
Total | 7,653 |
Unrealized Losses |  |
Less Than 12 Months | 156 |
12 Months or More | 0 |
Total | $ 156 |
Asset-backed |  |
Number of Securities |  |
Less Than 12 Months | security | 6 |
12 Months or More | security | 0 |
Total | security | 6 |
Fair Value |  |
Less Than 12 Months | $ 60,006 |
12 Months or More | 0 |
Total | 60,006 |
Unrealized Losses |  |
Less Than 12 Months | 425 |
12 Months or More | 0 |
Total | $ 425 |
Private label residential CMOs |  |
Number of Securities |  |
Less Than 12 Months | security |  | 0
12 Months or More | security |  | 3
Total | security |  | 3
Fair Value |  |
Less Than 12 Months |  | $ 0
12 Months or More |  | 5,005
Total |  | 5,005
Unrealized Losses |  |
Less Than 12 Months |  | 0
12 Months or More |  | 36
Total |  | $ 36

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