Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]

The components of net periodic benefit cost

The components of net periodic benefit cost (income) related to our employee benefit plans are as follows (in thousands):

	Three Months Ended September 30,
	Defined Benefit Pension Plan				Defined Benefit Pension Plan Acquired				Restoration Plan
	2021		2020		2021		2020		2021		2020
Service cost	$	—	$	483	$	—	$	—	$	—	$	149
Interest cost	642		672		23		41		130		126
Expected return on assets	(1,355)		(1,344)		(53)		(75)		—		—
Net loss amortization	251		694		1		2		64		125
Prior service (credit) cost amortization	—		(4)		—		—		—		2
Net periodic benefit (income) cost	$	(462)	$	501	$	(29)	$	(32)	$	194	$	402

	Nine Months Ended September 30,
	Defined Benefit Pension Plan				Defined Benefit Pension Plan Acquired				Restoration Plan
	2021		2020		2021		2020		2021		2020
Service cost	$	—	$	1,311	$	—	$	—	$	—	$	280
Interest cost	1,927		2,359		69		122		390		442
Expected return on assets	(4,065)		(4,332)		(158)		(226)		—		—
Net loss amortization	752		1,780		4		7		192		426
Prior service (credit) cost amortization	—		(11)		—		—		—		5
Loss due to curtailment	—		151		—		—		—		12
Net periodic benefit (income) cost	$	(1,386)	$	1,258	$	(85)	$	(97)	$	582	$	1,165