Debt (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of long-term debt

Debt obligations as of December 31, 2019 and June 30, 2020 consisted of the following (in thousands):

	December 31, 2019
			Unamortized Debt		Balance, Net of
	Principal Balance		Financing Costs		Financing Costs
7.5% Notes	$	50,000	$	17	$	49,983
NG Advantage debt		33,898		192		33,706
SG Facility		4,400		—		4,400
Other debt		796		—		796
Total debt		89,094		209		88,885
Less amounts due within one year		(56,097)		(84)		(56,013)
Total long-term debt	$	32,997	$	125	$	32,872

	June 30, 2020
			Unamortized Debt		Balance, Net of
	Principal Balance		Financing Costs		Financing Costs
NG Advantage debt	$	31,489	$	160	$	31,329
SG Facility		4,600		—		4,600
Other debt		613		—		613
Total debt		36,702		160		36,542
Less amounts due within one year		(6,110)		(67)		(6,043)
Total long-term debt	$	30,592	$	93	$	30,499