Components of Net Periodic Benefit Costs (Tables)

6 Months Ended

Jun. 30, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The following table summarizes the impact of retrospective application to the consolidated statements of income for the three and six months ended June 30, 2018:

	For the Three Months Ended		For the Six Months Ended
	June 30, 2018		June 30, 2018
	(In thousands)
Compensation and employee benefits:
As previously reported	$	16,750	$	33,275
As reported under new guidance	18,275		36,325
Other non-interest expense:
As previously reported	$	3,220	$	6,296
As reported under new guidance	1,695		3,246

Net periodic benefit (income) cost for Pension Plan, RIM Plan, Post-retirement Plan and split-dollar life insurance arrangement plan benefits for the three and six months ended June 30, 2019 and 2018, includes the following components:

	For the Three Months Ended June 30,
	Pension Plan						RIM Plan				Post-retirement Plans
	2019			2018			2019		2018		2019		2018			Affected Line Item in the Consolidated Statements of Income
	(In thousands)
Service cost	$	1,501		$	1,780		$	53	$	61	$	172	$	93		Compensation and employee benefits
Interest cost	2,194			2,129			116		111		321		205			Other non-interest expense
Expected return on plan assets	(4,727		)	(4,815		)	—		—		—		—			Other non-interest expense
Amortization:
Prior service cost	—			—			—		—		14		(34		)	Other non-interest expense
Net loss	765			707			61		103		99		69			Other non-interest expense
Net periodic (income) benefit cost	$	(267	)	$	(199	)	$	230	$	275	$	606	$	333

	For the Six Months Ended June 30,
	Pension Plan						RIM Plan				Post-retirement Plans
	2019			2018			2019		2018		2019		2018
	(In thousands)
Service cost	$	3,002		$	3,560		$	106	$	122	$	344	$	186		Compensation and employee benefits
Interest cost	4,388			4,258			232		222		642		410			Other non-interest expense
Expected return on plan assets	(9,454		)	(9,630		)	—		—		—		—			Other non-interest expense
Amortization:
Prior service cost	—			—			—		—		28		(68		)	Other non-interest expense
Net loss	1,530			1,414			122		206		198		138			Other non-interest expense
Net periodic (income) benefit cost	$	(534	)	$	(398	)	$	460	$	550	$	1,212	$	666