Fair Value Measurements (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Liabilities, Fair Value Disclosure [Abstract]
Warrant liability	$ 97,831,000	$ 89,441,000
Fair value warrants issued	7.93
Fair Value, Measurements, Recurring [Member] | Total [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	6,482,000	482,000
Derivative Asset	697,000	547,000
Total Assets	7,179,000	1,029,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	(17,000)	(77,000)
Warrant liability	(97,831,000)	(89,441,000)
Total Liabilities	(97,848,000)	(89,518,000)
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Liabilities, Fair Value Disclosure [Abstract]
Carrying value, debt	508,400,000	458,700,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	0	0
Derivative Asset	0	0
Total Assets	0	0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	0	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	6,482,000	482,000
Derivative Asset	697,000	547,000
Total Assets	7,179,000	1,029,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	(17,000)	(77,000)
Warrant liability	(97,831,000)	(89,441,000)
Total Liabilities	(97,848,000)	(89,518,000)
Difference between fair value and carrying value, debt	4,900,000	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
Total Assets	0	0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	0	0
Warrant liability	0	0
Total Liabilities	$ 0	$ 0