Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Component of 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, 2019									Three Months Ended   March 31, 2018
	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	$	198,146		$	41,611		$	156,535		$	(178,904	)	$	(37,570	)	$	(141,334	)
Change in net unrealized gain on securities transferred to held to maturity	(344		)	(72		)	(272		)	(2,619		)	(550		)	(2,069		)
Reclassification adjustment for net (gains) losses included in net income	—			—			—			19			4			15
Total securities available for sale and transferred securities	197,802			41,539			156,263			(181,504		)	(38,116		)	(143,388		)
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)	1,406			295			1,111			1,250			263			987
Total defined-benefit post-retirement benefit plans	1,406			295			1,111			1,250			263			987
Total other comprehensive income (loss)	$	199,208		$	41,834		$	157,374		$	(180,254	)	$	(37,853	)	$	(142,401	)

Schedule of Accumulated Other Comprehensive Income, Net of Tax

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, 2019	$	(16,103	)	$	(47,497	)	$	(63,600	)
Other comprehensive income (loss) before reclassifications	156,263			—			156,263
Reclassification of amounts included in net income	—			1,111			1,111
Net other comprehensive income (loss) during period	156,263			1,111			157,374
Balance at March 31, 2019	$	140,160		$	(46,386	)	$	93,774
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	)