Retirement Plans - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Redemption fees for mutual fund's net asset value		$ 0
Executive Officer [Member] | SERP [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Plan expense recognized		$ 33	$ 128	$ 192
Discount rate for benefit obligations		4.20%	3.50%
Accrued compensation		$ 2,449	$ 2,923
401K Plan [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Recognized expense		2,216	$ 2,302	$ 2,324
Scenario Forecast [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Contribution to plan	$ 30
Mutual Funds [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Fair value of plan assets		2,352
Pooled Separate Accounts [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Fair value of plan assets		$ 2,385