Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Debt Obligations

Debt obligations consisted of the following as of December 31, 2019 and 2018 (in thousands):

Debt instrument	Principal at December 31, 2019		Unamortized Debt Discount			Balance at December 31, 2019
Current Portion:
Debentures	$	146	$	—		$	146
2015 Subordinated Notes		500		—			500
Long-term Portion:
2015 Subordinated Notes		13,500		(120	)		13,380
Total	$	14,146	$	(120	)	$	14,026
Debt instrument	Principal at December 31, 2018		Unamortized Debt Discount			Balance at December 31, 2018
Current Portion:
Debentures	$	146	$	—		$	146
Long-term Portion:
2015 Subordinated Notes		14,000		(788	)		13,212
Total	$	14,146	$	(788	)	$	13,358