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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2020

Stockholders Equity Note [Abstract]

Components of Accumulated Other Comprehensive Income (Loss)

		Available for Sale Securities				HTM Securities Transferred from AFS				Employee Benefit Plans				Cash Flow Hedges				Equity Method Investment				Total
(in thousands)
Balance, December 31, 2018		$	(50,125	)		$	(12,044	)		$	(110,247	)		$	(8,293	)		$	—			$	(180,709	)
Net change in unrealized loss			125,589				—				—				35,472				(434	)			160,627
Reclassification of net loss realized and included in earnings			—				—				6,851				4,632				—				11,483
Valuation adjustment to employee benefit plans			—				—				(7,015	)			—				—				(7,015	)
Amortization of unrealized net loss on securities transferred to HTM			—				2,435				—				—				—				2,435
Income tax expense (benefit)			28,395				551				(37	)			9,068				—				37,977
Balance, September 30, 2019		$	47,069			$	(10,160	)		$	(110,374	)		$	22,743			$	(434	)		$	(51,156	)
Balance, December 31, 2019		$	28,950			$	639			$	(101,278	)		$	17,399			$	(434	)		$	(54,724	)
Net change in unrealized gain or loss			176,009				—				—				46,180				(4,935	)			217,254
Reclassification of net income or loss realized and included in earnings			—				—				4,656				(11,249	)			—				(6,593	)
Valuation adjustment to employee benefit plans			—				—				(10,251	)			—				—				(10,251	)
Amortization of unrealized net gain on securities transferred to HTM			—				(378	)			—				—				—				(378	)
Income tax expense (benefit)			39,817				(85	)			(1,265	)			7,903				—				46,370
Balance, September 30, 2020		$	165,142			$	346			$	(105,608	)		$	44,427			$	(5,369	)		$	98,938

Line Items in Consolidated Income Statements Affected by Amounts Reclassified from Accumulated Other Comprehensive Income

The following table shows the line items of the consolidated statements of income affected by amounts reclassified from AOCI.

		Nine Months Ended
Amount reclassified from AOCI (a)		September 30,								Affected line item on
(in thousands)		2020				2019				the statement of income
Amortization of unrealized net gain or loss or gain on securities transferred to HTM		$	378			$	(2,435	)		Interest income
Tax effect			(85	)			551			Income taxes
Net of tax			293				(1,884	)		Net income
Amortization of defined benefit pension and post-retirement items			(4,656	)			(6,851	)		Other noninterest expense (b)
Tax effect			1,053				1,546			Income taxes
Net of tax			(3,603	)			(5,305	)		Net income
Reclassification of unrealized gain (loss) on cash flow hedges			12,602				(1,200	)		Interest income
Tax effect			(2,851	)			271			Income taxes
Net of tax			9,751				(929	)		Net income
Amortization of loss on terminated cash flow hedges			(1,353	)			(3,432	)		Interest income
Tax effect			306				776			Income taxes
Net of tax			(1,047	)			(2,656	)		Net income
Total reclassifications, net of tax		$	5,394			$	(10,774	)		Net income

(a)	Amounts in parentheses indicate reduction in net income.

(b)	These AOCI components are included in the computation of net periodic pension and post-retirement cost that is reported with other noninterest expense (see Note 12 – Retirement Plans for additional details).