Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Mandatory 401(k) match	$ 1.00
Maximum annual employer 401(k) contribution	5.50%
Amount expensed for 401(k) contributions	$ 1,400,000	$ 1,400,000	$ 1,100,000
Accrued liability for plan	1,600,000	1,500,000
Increase (decrease) in non-qualified deferred compensation plan	36,000	52,000	140,000
Aggregate payout under profit sharing plan	2,900,000	1,300,000	1,200,000
RML
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Mandatory 401(k) match	$ 1.00
Maximum annual employer 401(k) contribution	2.00%
Supplemental Employee Retirement Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Contributions to supplemental plan	$ 262,000	247,000	264,000
Accrued liability for plan	2,100,000	2,200,000
Supplemental Employee Retirement Plan | RML
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Contributions to supplemental plan	580,000	489,000	$ 600,000
Accrued liability for plan	$ 2,800,000	$ 2,300,000
Vesting period	10 years