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TAX EFFECT ALLOCATED TO EACH COMPONENT OF OTHER COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Statement of Income and Comprehensive Income        
Amortization of net losses of pension and postretirement benefit plans $ (2,101) $ (2,185) $ (6,301) $ (6,556)
Amortization of prior service credit of pension and postretirement benefit plans 339 370 1,016 1,110
Unrealized holding (losses) gains on debt securities arising during the period 3,936 122 13,701 239
Other-than-temporary impairment included in net income 0 0 0 (1,559)
Reclassification adjustment for gains included in net income 0 17 0 17
Unrealized holding gains on equity securities arising during the period 0 (12) 0 (45)
Reclassification adjustment for gains included in net income 0 4 0 40
Unrealized net gains (losses) on cash flow hedges (133) 160 (506) 555
Reclassification adjustment for net losses (gains) included in net income (58) (90) 339 (827)
Income tax benefit (expense) $ 1,983 $ (1,614) $ 8,249 $ (7,026)