Significant Acquisition Costs Significant Acquisition Costs Included in Statements of Operations (Details) - Recall Transaction and IODC Transaction [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 10,421	$ 19,977	$ 29,429	$ 40,548
Cost of sales (excluding depreciation and amortization)
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	1,827	5,073	2,123	12,960
Selling, general and administrative expenses
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 8,594	$ 14,904	$ 27,306	$ 27,588