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Securities - Continuous Unrealized Losses (Detail) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Less than 12 Months |  |
Fair Value | $ 227,455 | $ 106,735
Unrealized Loss | (3,684) | (771)
12 Months or More |  |
Fair Value | 165,977 | 134,831
Unrealized Loss | (7,283) | (3,428)
Fair Value | 393,432 | 241,566
Unrealized Loss | (10,967) | (4,199)
U.S. gov’t sponsored entities |  |
Less than 12 Months |  |
Fair Value | 63,025 | 55,696
Unrealized Loss | (736) | (540)
12 Months or More |  |
Fair Value | 70,211 | 34,754
Unrealized Loss | (1,967) | (368)
Fair Value | 133,236 | 90,450
Unrealized Loss | (2,703) | (908)
State & political subdivisions |  |
Less than 12 Months |  |
Fair Value | 45,113 | 15,890
Unrealized Loss | (617) | (69)
12 Months or More |  |
Fair Value | 7,907 | 4,104
Unrealized Loss | (479) | (245)
Fair Value | 53,020 | 19,994
Unrealized Loss | (1,096) | (314)
Residential & multi-family mortgage |  |
Less than 12 Months |  |
Fair Value | 106,762 | 30,144
Unrealized Loss | (2,196) | (153)
12 Months or More |  |
Fair Value | 62,880 | 63,699
Unrealized Loss | (3,213) | (1,729)
Fair Value | 169,642 | 93,843
Unrealized Loss | (5,409) | (1,882)
Corporate notes and bonds |  |
Less than 12 Months |  |
Fair Value | 5,229 | 5,005
Unrealized Loss | (29) | (9)
12 Months or More |  |
Fair Value | 4,676 | 9,042
Unrealized Loss | (324) | (453)
Fair Value | 9,905 | 14,047
Unrealized Loss | (353) | (462)
Pooled SBA |  |
Less than 12 Months |  |
Fair Value | 7,326 | 0
Unrealized Loss | (106) | 0
12 Months or More |  |
Fair Value | 19,377 | 22,270
Unrealized Loss | (1,206) | (575)
Fair Value | 26,703 | 22,270
Unrealized Loss | (1,312) | (575)
Other |  |
Less than 12 Months |  |
Fair Value | 0 | 0
Unrealized Loss | 0 | 0
12 Months or More |  |
Fair Value | 926 | 962
Unrealized Loss | (94) | (58)
Fair Value | 926 | 962
Unrealized Loss | $ (94) | $ (58)

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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