Summary of Significant Accounting Policies - Life Insurance Policies (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) Individual	Dec. 31, 2022 USD ($)
Supplementary Information For Corporate Owned Life Insurance [Line Items]
Number of former employees covered under insurance policies | Individual	16
Average age of former employees covered under insurance policies	80 years
Gross cash surrender values of life insurance	$ 30,100	$ 29,500
Loans on cash surrender value	26,800	26,000
Net cash surrender values of life insurance	4,202	4,120
Gross death benefit of life insurance contracts	37,800	37,000
Life insurance proceeds to be received upon the death of participants	10,800
Casualty Events [Member]
Supplementary Information For Corporate Owned Life Insurance [Line Items]
Expected non-taxable life insurance gain upon death of participants	7,500
Non-Qualified Defined Benefit Executive Supplemental Benefit Plan [Member]
Supplementary Information For Corporate Owned Life Insurance [Line Items]
Net cash surrender values of life insurance	$ 3,300	$ 3,500