Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accrued Liabilities Detail [Table]
Compensation and employee benefits	$ 25,472		$ 25,286
Operating Lease, Liability, Current	15,850	$ 12,000	0
Oil and gas producing liabilities	14,965		15,158
Unearned income	3,625		1,561
Deferred tax liability	16,467		15,756
Contingent consideration, current portion	0		11,452
Other accrued liabilities	11,498		20,019
Accrued liabilities	$ 87,877		$ 89,232