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Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Consolidated Statements Of Comprehensive Income [Abstract] |  |  |
Net unrealized (depreciation) appreciation on securities available for sale, tax | $ (708) | $ 8,291 | $ (7,926)
Reclassification adjustment for net (losses) gains related to securities available for sale included in net income, tax | (467) | (138) | (230)
Other-than-temporary impairment adjustment, tax | 0 | 0 | 122
Non-credit portion of other-than-temporary impairment losses, tax | 0 | 0 | (37)
Net unrealized depreciation on interest rate derivatives, tax | 484 | 389 | 0
Amortization of prior service cost and actuarial (loss) gain for supplemental executive retirement plan, tax | 13 | 0 | (36)
Actuarial (gain) loss on supplemental executive retirement plan, tax | $ 0 | $ (59) | $ 51

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- Definition Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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- Definition Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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