Debt (Second Lien Credit Facility) (Details) - Second Lien Credit Facility - USD ($)		12 Months Ended
	Sep. 02, 2016	Dec. 31, 2016
Line Of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity	$ 252,500,000
Line of Credit Facility, Expiration Date	Feb. 23, 2020
Percentage of interest expense paid in cash	2.00%
Variable interest rate, period	15 months
Prior to February 23, 2017
Line Of Credit Facility [Line Items]
Percentage of principal amount prepaid	4.50%
After February 23, 2017 and Prior to February 23, 2018
Line Of Credit Facility [Line Items]
Percentage of principal amount prepaid	2.25%
After February 23, 2018
Line Of Credit Facility [Line Items]
Percentage of principal amount prepaid	0.00%
London Interbank Offered Rate (LIBOR)
Line Of Credit Facility [Line Items]
Applicable margin rate	9.00%
Maximum
Line Of Credit Facility [Line Items]
Interest payable date		May 01, 2017
Maximum | Prior to December 31, 2017
Line Of Credit Facility [Line Items]
Leverage ratio		5.50%
Maximum | December 31, 2017 Thereafter
Line Of Credit Facility [Line Items]
Leverage ratio		5.00%
Minimum
Line Of Credit Facility [Line Items]
EBITDA to interest expense ratio		2.50%
Required Current Assets to Current Liabilities ratio		1.00%