Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of weighted-average assumptions used to determine pension benefit obligations

Weighted-average assumptions used to determine the pension benefit obligation of the Modified Retirement Plan at year end and net periodic pension cost are shown in the table below:

	2021		2020
Discount rate for disclosures	2.90	%	2.55	%
Discount rate for net periodic benefit cost	2.55	%	3.25	%
Measurement date	12/31/2021		12/31/2020

Schedule of changes in obligations and plan assets

United recognizes the unfunded status of the Modified Retirement Plan as a liability in the consolidated balance sheets. Information about changes in obligations and plan assets follows (in thousands): 

	Modified Retirement Plan
	2021		2020
Accumulated benefit obligation:
Accumulated benefit obligation - beginning of year	$	27,099	$	25,105
Service cost	659		588
Interest cost	676		795
Actuarial (gains) losses	(1,066)		1,804
Benefits paid	(1,107)		(1,193)
Accumulated benefit obligation - end of year	26,261		27,099
Change in plan assets, at fair value:
Beginning plan assets	—		—
Employer contribution	1,107		1,193
Benefits paid	(1,107)		(1,193)
Plan assets - end of year	—		—
Funded status - end of year (plan assets less benefit obligations)	$	(26,261)	$	(27,099)

Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive income

Components of net periodic benefit cost and other amounts recognized in other comprehensive income are as follows (in thousands): 

	2021		2020		2019
	Modified Retirement Plan		Modified Retirement Plan		Modified Retirement Plan		Funded Plan
Service cost	$	659	$	588	$	392	$	—
Interest cost	676		795		931		166
Expected return on plan assets	—		—		—		(106)
Amortization of prior service cost	469		531		635		—
Amortization of net actuarial losses	576		326		59		—
Net periodic benefit cost	$	2,380	$	2,240	$	2,017	$	60

Schedule of estimated future benefit payments expected to be paid

The following table summarizes the estimated future benefit payments expected to be paid from the Modified Retirement Plan for the periods indicated (in thousands).

2022	$	1,191
2023	1,185
2024	1,179
2025	1,192
2026	1,213
2027-2031	8,276