Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 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 gain or loss		46,984			—			—			9,475			784			57,243
Reclassification of net loss realized and included in earnings		—			—			2,203			2,016			—			4,219
Amortization of unrealized net loss on securities transferred to HTM		—			591			—			—			—			591
Income tax expense (benefit)		10,623			134			498			2,598			—			13,853
Balance, March 31, 2019	$	(13,764	)	$	(11,587	)	$	(108,542	)	$	600		$	784		$	(132,509	)
Balance, December 31, 2019	$	28,950		$	639		$	(101,278	)	$	17,399		$	(434	)	$	(54,724	)
Net change in unrealized gain or loss		124,018			—			—			41,476			(197	)		165,297
Reclassification of net income or loss realized and included in earnings		—			—			1,232			(864	)		—			368
Amortization of unrealized net gain on securities transferred to HTM		—			(195	)		—			—			—			(195	)
Income tax expense (benefit)		28,056			(44	)		279			9,189			—			37,480
Balance, March 31, 2020	$	124,912		$	488		$	(100,325	)	$	48,822		$	(631	)	$	73,266

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.

	Three Months Ended
Amount reclassified from AOCI (a)	March 31,						Affected line item on
(in thousands)	2020			2019			the statement of income
Amortization of unrealized net loss or gain on securities transferred to HTM	$	195		$	(591	)	Interest income
Tax effect		(44	)		134		Income taxes
Net of tax		151			(457	)	Net income
Amortization of defined benefit pension and post-retirement items		(1,232	)		(2,203	)	Other noninterest expense (b)
Tax effect		279			498		Income taxes
Net of tax		(953	)		(1,705	)	Net income
Reclassification of unrealized gain (loss) on cash flow hedges		1,569			(610	)	Interest income
Tax effect		(355	)		138		Income taxes
Net of tax		1,214			(472	)	Net income
Amortization of loss on terminated cash flow hedges		(705	)		(1,406	)	Interest income
Tax effect		159			318		Income taxes
Net of tax		(546	)		(1,088	)	Net income
Total reclassifications, net of tax	$	(134	)	$	(3,722	)	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 employee benefits expense (see Note 11 – Retirement Plans for additional details).