Employee Benefit Plans - Executive Incentive Retirement Plan (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Executive Management
Deferred Compensation Arrangement with Individual, Postretirement Benefits
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage	100.00%
Director
Deferred Compensation Arrangement with Individual, Postretirement Benefits
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage	100.00%
Other Postretirement Benefits Plan | Executive Management
Deferred Compensation Arrangement with Individual, Postretirement Benefits
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage	7.50%
Award vesting rights, percentage	100.00%
Accrued employee benefits	$ 34
Life insurance plan with a post retirement death benefit	250
Life insurance plan aggregate expenses	$ 1	$ 6
Postemployment benefits prior period expense reversed		$ 55
Other Postretirement Benefits Plan | Executive Management | Maximum
Deferred Compensation Arrangement with Individual, Postretirement Benefits
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage	15.00%