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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Net Income $ 24,745 $ 23,273 $ 66,495 $ 68,184
Unrealized Gain (Loss) on Available-for-Sale Securities:        
Reversal of Previously Recognized Gains Realized on Sale of Investments and Included in Other Income During Period (1) 4 (5) (106)
Unrealized Gains (Losses) Arising During Period 30 (14) 187 (93)
Income Tax (Expense) Benefit (6) 2 (38) 42
Change in Unrealized Gains on Available-for-Sale Securities – net-of-tax 23 (8) 144 (157)
Pension and Postretirement Benefit Plans:        
Amortization of Unrecognized Postretirement Benefit Losses and Costs (note 11) 130 232 389 692
Income Tax Expense (34) (60) (101) (180)
Adjustment to Income Tax Expense Related to 2017 Tax Cuts and Jobs Act 0 0 0 (531)
Pension and Postretirement Benefit Plans – net-of-tax 96 172 288 (19)
Total Other Comprehensive Income (Loss) 119 164 432 (176)
Total Comprehensive Income $ 24,864 $ 23,437 $ 66,927 $ 68,008