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SECURITIES AVAILABLE FOR SALE - Gross Unrealized Losses and Fair Value of Company's Available for Sale Securities (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Fair Value |  |
Less Than 12 Months | $ 112,325 | $ 139,058
12 Months or More | 16,377 | 24,245
Total | 128,702 | 163,303
Unrealized Losses |  |
Less Than 12 Months | 3,727 | 4,195
12 Months or More | 383 | 708
Total | 4,110 | 4,903
U.S. Government Agencies |  |
Fair Value |  |
Less Than 12 Months | 0 | 10,710
12 Months or More | 8,491 | 13,531
Total | 8,491 | 24,241
Unrealized Losses |  |
Less Than 12 Months | 0 | 23
12 Months or More | 50 | 101
Total | 50 | 124
States and political subdivisions |  |
Fair Value |  |
Less Than 12 Months | 43,443 | 58,924
12 Months or More | 5,326 | 5,075
Total | 48,769 | 63,999
Unrealized Losses |  |
Less Than 12 Months | 565 | 610
12 Months or More | 302 | 567
Total | 867 | 1,177
GSE residential MBSs |  |
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 |  |
Fair Value |  |
Less Than 12 Months | 63,943 | 59,534
12 Months or More | 551 | 634
Total | 64,494 | 60,168
Unrealized Losses |  |
Less Than 12 Months | 2,957 | 3,264
12 Months or More | 4 | 4
Total | 2,961 | 3,268
GSE commercial CMOs |  |
Fair Value |  |
Less Than 12 Months | 4,939 | 4,856
12 Months or More | 0 | 0
Total | 4,939 | 4,856
Unrealized Losses |  |
Less Than 12 Months | 205 | 292
12 Months or More | 0 | 0
Total | 205 | 292
Private label CMOs |  |
Fair Value |  |
Less Than 12 Months | 0 | 0
12 Months or More | 2,009 | 5,005
Total | 2,009 | 5,005
Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or More | 27 | 36
Total | $ 27 | $ 36

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