Debt and Capital Leases (8.75% Senior Notes) (Details) - 8.75% Senior Notes - USD ($) $ in Thousands		9 Months Ended
	Jun. 29, 2018	Sep. 30, 2018
Debt Instrument [Line Items]
Aggregate principal amount	$ 300,000
Estimated offering costs	7,337
Net proceeds from issuance of debt	$ 292,663
Debt instrument, interest rate	8.75%
Debt instrument periodic payment	semi-annually
Debt instrument arrears month and date one		January 15
Debt instrument arrears month and date two		July 15
Debt instrument arrears beginning date	Jan. 15, 2019
Debt instrument maturity date	Jul. 15, 2023
Debt instrument, redemption date		Jul. 15, 2020
Debt instrument, redemption, description		Prior to July 15, 2020, the Company may, at its option, redeem all or, from time to time, a part of the Senior Notes at a redemption price equal to 100% of the principal amount thereof, plus an applicable make-whole premium and accrued and unpaid interest, if any, to the date of redemption. On or after July 15, 2020, the Company may, at its option, redeem all or, from time to time, a part of the Notes at a redemption price equal to 100% of the principal amount thereof, plus a premium declining ratably to par and accrued and unpaid interest, if any, to the date of redemption.
Aggregate principal amount of notes		35.00%
Aggregate principal amount of notes remains outstanding		60.00%
Aggregate principal amount of outstanding notes		25.00%
Principal amount accrued and unpaid interest.		101.00%
Prior to July 15, 2020
Debt Instrument [Line Items]
Debt instrument redemption price percentage to principal amount		108.75%
Minimum
Debt Instrument [Line Items]
Debt instrument redemption price percentage to principal amount		100.00%