Pension and Other Post Retirement Benefit Plans - Schedule of Changes in Benefit Obligation, and Plan Assets, Funded Status of the Plan, Assets and Liabilities Recognized in the Balance Sheets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in Benefit Obligation:
Benefit obligation at beginning of year	$ 80,786	$ 76,770
Service cost	0	16	$ 39
Interest cost	1,760	2,343	2,975
Actuarial (gain) loss	(2,919)	6,957
Benefits paid	(5,353)	(5,300)
Benefit obligation at end of year	74,274	80,786	76,770
Change in Plan Assets:
Fair value of plan assets at beginning of year	88,512	85,121
Actual return on plan assets	10,786	7,925
Employer contributions	643	766
Benefits paid	(5,353)	(5,300)
End of year	94,588	88,512	$ 85,121
Funded status at end of year	20,314	7,726
Assets and Liabilities Recognized in the Balance Sheets:
Deferred tax asset	1,545	3,970
Assets	24,750	12,681
Liabilities	$ 4,436	$ 4,955