Fair Value Disclosures - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Interest rate derivatives
Assets:
Interest rate derivatives	$ 2,500,000
Liabilities:
Interest rate derivatives	0
Recurring | Interest rate derivatives
Assets:
Interest rate derivatives	2,463,000	$ 0
Recurring | SERP
Assets:
SERP	1,969,000	2,566,000
Recurring | Interest rate derivatives
Liabilities:
Interest rate derivatives	0	(821,000)
Recurring | Level 1 | Interest rate derivatives
Assets:
Interest rate derivatives	0	0
Recurring | Level 1 | SERP
Assets:
SERP	0	0
Recurring | Level 1 | Interest rate derivatives
Liabilities:
Interest rate derivatives	0	0
Recurring | Level 2 | Interest rate derivatives
Assets:
Interest rate derivatives	2,463,000	0
Recurring | Level 2 | SERP
Assets:
SERP	1,969,000	2,566,000
Recurring | Level 2 | Interest rate derivatives
Liabilities:
Interest rate derivatives	0	(821,000)
Recurring | Level 3 | Interest rate derivatives
Assets:
Interest rate derivatives	0	0
Recurring | Level 3 | SERP
Assets:
SERP	0	0
Recurring | Level 3 | Interest rate derivatives
Liabilities:
Interest rate derivatives	$ 0	$ 0