Fair Value Measurements (Details) - USD ($)	Sep. 30, 2017	Sep. 25, 2017	Dec. 31, 2016
Liabilities, Fair Value Disclosure [Abstract]
Warrant liability	$ 229,965,000		$ 89,441,000
Fair value warrants issued	15.44
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	50,800,000		482,000
Derivative Asset	546,000		547,000
convertible note hedge fair value	60,605,000
Total Assets	111,951,000		1,029,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	(351,000)		(77,000)
Note Conversion Obligation fair value	(61,230,000)
Warrant liability	(229,965,000)		(89,441,000)
Total Liabilities	(291,546,000)		(89,518,000)
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	0		0
Derivative Asset	0		0
convertible note hedge fair value	0
Total Assets	0		0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	0		0
Note Conversion Obligation fair value	0
Warrant liability	0		0
Total Liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	50,800,000		482,000
Derivative Asset	546,000		547,000
convertible note hedge fair value	60,605,000	$ 56,097,000
Total Assets	111,951,000		1,029,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	(351,000)		(77,000)
Note Conversion Obligation fair value	(61,230,000)	$ 57,369,000
Warrant liability	(229,965,000)		(89,441,000)
Total Liabilities	(291,546,000)		(89,518,000)
Difference between fair value and carrying value, debt	12,400,000		200,000
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	0		0
Derivative Asset	0		0
convertible note hedge fair value	0
Total Assets	0		0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	0		0
Note Conversion Obligation fair value	0
Warrant liability	0		0
Total Liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Liabilities, Fair Value Disclosure [Abstract]
Carrying value, debt	$ 493,200,000		$ 458,700,000