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Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
(Losses) gains realized in net income |  | $ (1) | $ 23
Amortization of losses |  | (71) | (82)
Income before income taxes |  | (9,013) | (8,795)
Income tax (benefit) expense |  | 2,929 | 2,837
Net Income |  | (6,084) | (5,958)
Reclassified from AOCI, net of tax |  | (43) | (65)
Available-for-Sale Securities |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassified from AOCI, net of tax |  | 1 | (14)
Employee Benefit Plan |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassified from AOCI, net of tax |  | (44) | (51)
Reclassification out of Accumulated Other Comprehensive Income |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassified from AOCI, net of tax |  | (43) | (65)
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 |  | 1 | (23)
Net impairment losses recognized in earnings |  | 0 | 0
Income before income taxes |  | 1 | (23)
Income tax (benefit) expense |  |  | 9
Net Income |  | 1 | (14)
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] | (57) | (65)
Amortization of losses | [1] | (14) | (17)
Income before income taxes |  | (71) | (82)
Income tax (benefit) expense |  | 27 | 31
Net Income |  | $ (44) | $ (51)
[1] | Amortization is included in net periodic pension cost. See Note 10, "Employee Benefit Plans."

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- Definition The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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