Other Comprehensive Income (Loss)

The before and after tax amounts allocated to each component of other comprehensive income (loss) are presented in the following table. Reclassification adjustments related to securities available for sale are included in net gain (loss) on securities transactions in the accompanying consolidated statements of income. Reclassification adjustments related to defined-benefit post-retirement benefit plans are included in the computation of net periodic pension expense (see Note 12 – Defined Benefit Plans).



	Three Months Ended March 31, 2018									Three Months Ended March 31, 2017
	Before Tax Amount			Tax Expense, (Benefit)			Net of Tax Amount			Before Tax Amount			Tax Expense, (Benefit)			Net of Tax Amount
Securities available for sale and transferred securities:
Change in net unrealized gain/loss during the period	$	(178,904	)	$	(37,570	)	$	(141,334	)	$	33,811		$	11,834		$	21,977
Change in net unrealized gain on securities transferred to held to maturity	(2,619		)	(550		)	(2,069		)	(6,286		)	(2,200		)	(4,086		)
Reclassification adjustment for net (gains) losses included in net income	19			4			15			—			—			—
Total securities available for sale and transferred securities	(181,504		)	(38,116		)	(143,388		)	27,525			9,634			17,891
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss	—			—			—			—			—			—
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit)	1,250			263			987			1,357			475			882
Total defined-benefit post-retirement benefit plans	1,250			263			987			1,357			475			882
Total other comprehensive income (loss)	$	(180,254	)	$	(37,853	)	$	(142,401	)	$	28,882		$	10,109		$	18,773

Activity in accumulated other comprehensive income (loss), net of tax, was as follows:



	Securities Available For Sale			Defined Benefit Plans			Accumulated Other Comprehensive Income
Balance January 1, 2018	$	117,230		$	(37,718	)	$	79,512
Other comprehensive income (loss) before reclassifications	(143,403		)	—			(143,403		)
Reclassification of amounts included in net income	15			987			1,002
Net other comprehensive income (loss) during period	(143,388		)	987			(142,401		)
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act to retained earnings	17,557			(8,022		)	9,535
Balance at March 31, 2018	$	(8,601	)	$	(44,753	)	$	(53,354	)

Balance January 1, 2017	$	16,153		$	(40,776	)	$	(24,623	)
Other comprehensive income (loss) before reclassifications	17,891			—			17,891
Reclassification of amounts included in net income	—			882			882
Net other comprehensive income (loss) during period	17,891			882			18,773
Balance at March 31, 2017	$	34,044		$	(39,894	)	$	(5,850	)