Supplemental Disclosure of Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Interest	$ 27	$ 259
Issuance of capital leases		84
Lease liability from right-of-use assets	2,568
Interest converted into common stock		556
Conversion of convertible debt to equity		71,865
Convertible PIK interest		4,764
Conversion of interest related to the Credit Facility to long-term debt		7,977
Write-off of convertible debt issuance cost		1,012
Extinguishment of Prior Credit Agreement (including debt issuance costs)	79,264
Write-off of Prior Credit Agreement debt issuance costs and existing ROS fees	307
Recognition of Second Amended and Restated Credit Agreement	72,657
Recognition of 2019 Warrants	$ 10