Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Operations restructuring costs		$ 4,700
Restructuring Reserve [Roll Forward]
Corporate restructuring and restatement costs	$ 3,400		$ 6,900
Property, Plant and Equipment
Restructuring Cost and Reserve [Line Items]
Initial write-down of assets to fair value		1,300
Accrued Expenses and Other Current Liabilities
Restructuring Cost and Reserve [Line Items]
Initial write-down of assets to fair value		$ 3,400
Restructuring reserves
Restructuring Reserve [Roll Forward]
Beginning balance at December 31, 2018	544
Charges	0
Adjustments	(79)
Payments	(112)
Ending balance at March 31, 2019	$ 353