XML 88 R73.htm IDEA: XBRL DOCUMENT

Retirement Plans, Summary of Funded Status at End of Year (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Funded status at end of year [Abstract]
Fair value of plan assets	$ 430,821,000	$ 395,137,000	$ 358,197,000
Benefit obligations	(495,272,000)	(508,694,000)	(442,861,000)
Funded status and amount recognized at end of year	(64,451,000)	(113,557,000)
SERP [Member]
Funded status at end of year [Abstract]
Fair value of plan assets	0	0	0
Benefit obligations	(1,033,000)	(1,174,000)	(1,225,000)
Funded status and amount recognized at end of year	(1,033,000)	(1,174,000)
Other Postretirement Benefits [Member]
Funded status at end of year [Abstract]
Fair value of plan assets	0	0	0
Benefit obligations	(582,000)	(629,000)	$ (662,000)
Funded status and amount recognized at end of year	$ (582,000)	$ (629,000)

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References + Details