Leases and Lease Commitments - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Leases [Abstract]
Cumulative effect of new accounting principle in period of adoption				$ 5,500
Operating lease liabilities	$ 1,314			1,600
Operating lease liabilities, long-term	3,801			$ 3,900
Lease expense recognize on a straight-line basis	2,100
Lease expense incurred	3,800	$ 5,400	$ 6,000
2020	1,700
2021	853
2022	514
2023	386
2024	349
After 2024	$ 3,513
2019		2,000
2020		1,500
2021		800
2022		500
2023		400
After 2023		$ 4,200