Severance (Details) - Severance	2 Months Ended
	Dec. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Severance Charges	$ 2,500,000
Restructuring Reserve [Roll Forward]
Beginning Balance Severance Liability	18,700,000
Provisions/adjustments	1,400,000
Cash Reductions	0
Ending Balance Severance Liability	$ 20,100,000