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Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
(Losses) gains realized in net income |  | $ 39 | $ (320) | $ (151) | $ (306)
Net impairment losses recognized in earnings |  |  | 219 |  | 737
Amortization of losses |  | (82) | (66) | (245) | (195)
Income before taxes |  | (9,343) | (10,652) | (26,780) | (29,168)
Income tax (benefit) expense |  | (3,084) | (3,609) | (8,388) | (9,393)
Net Income |  | (6,259) | (7,043) | (18,392) | (19,775)
Reclassified from AOCI, net of tax |  | 75 | (22) | 59 | 391
Available-for-Sale Securities |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from AOCI, net of tax |  | 24 | (63) | (94) | 269
Employee Benefit Plan |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from AOCI, net of tax |  | 51 | 41 | 153 | 122
Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from AOCI, net of tax |  | (75) | 22 | (59) | (391)
Reclassification out of Accumulated Other Comprehensive Income | Available-for-Sale Securities |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
(Losses) gains realized in net income |  | (39) | 320 | 151 | 306
Net impairment losses recognized in earnings |  |  | (219) |  | (737)
Income before taxes |  | (39) | 101 | 151 | (431)
Income tax (benefit) expense |  | (15) | 38 | 57 | (162)
Net Income |  | (24) | 63 | 94 | (269)
Reclassification out of Accumulated Other Comprehensive Income | Employee Benefit Plan |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Amortization of prior service cost | [1] | (65) | (66) | (195) | (195)
Amortization of losses | [1] | (17) |  | (50) |
Income before taxes |  | (82) | (66) | (245) | (195)
Income tax (benefit) expense |  | (31) | (25) | (92) | (73)
Net Income |  | $ (51) | $ (41) | $ (153) | $ (122)
[1] | Amortization is included in net periodic pension cost. See Note 10, "Employee Benefit Plans."

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