12.5 % Senior Secured Notes and Loans Payable, Perceptive (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Line of Credit Facility [Abstract]
Loss on extinguishment of debt	$ 0	$ (4,896)
Prepayment premiums paid	2,250	$ 2,944
Perceptive Credit Opportunities Fund, LP [Member] | Line of Credit [Member]
Line of Credit Facility [Abstract]
Credit facility, maximum borrowing capacity	$ 50,000
Warrant to purchase senior common equity interest ratio to fully diluted common units	4.50%