Clearwater Facility Idling (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Clearwater Facility Impairment
Impairment of property and equipment		$ 594	$ 89,083	$ 594
Impairment of goodwill			575,461
Total impairment expense			664,544	$ 594
Facility idling	$ 2,475		11,153
Clearwater Facility
Clearwater Facility Impairment
Impairment of property and equipment					$ 408,882
Impairment of goodwill					42,290
Impairment charge					11,871
Total impairment expense					$ 463,043
Facility idling	$ 2,500		$ 11,200