Convertible Notes (Tables)

12 Months Ended

Dec. 31, 2020

Debt Instrument [Line Items]

Carrying value and unamortized discount on December [Table Text Block]

The carrying value, accretion and unamortized discount of the December 2024 Notes under the Going Concern Basis were as follows:

(in thousands)	December 31, 2019
Principal amount of the December 2024 Notes	$	11,500
Unamortized discount of liability component	(1,200)
Net carrying value of the December 2024 Notes	$	10,300

Schedule of interest expense for December 2024 Notes [Table Text Block]

Interest expense for the December 2024 Notes included in the Company’s Consolidated Statement of Operations was as follows:

	Eight Months Ended		Year Ended
(in thousands)	August 31, 2020		December 31, 2019
Contractual coupon interest	$	49	$	598
Accretion Interest on outstanding principal	42		517
Amortization of debt issuance costs	6		53
Amortization of conversion feature	29		350
Total	$	126	$	1,518

Schedule of carrying value and unamortized discount on December 2021 Notes [Table Text Block]

The carrying value and unamortized discount of the December 2021 Notes were as follows:

(in thousands)	December 31, 2020		December 31, 2019
	(Liquidation Basis)		(Going Concern Basis)
Principal amount of the December 2021 Notes	$	2,330	$	19,170
Unamortized discount of liability component under Going Concern Basis	—		(2,220)
Expected settlement premium under Liquidation Basis	132		—
Net carrying value of the December 2021 Notes	$	2,462	$	16,950

Schedule of interest expense for February 2018 Notes [Table Text Block]

Interest expense for the February 2018 Notes on the Company’s Consolidated Statements of Operations was as follows:

(in thousands)	Year Ended December 31, 2018
Contractual coupon interest	$	422
Amortization of debt issuance costs	88
Amortization of debt discount	293
Total	$	803

Schedule of interest expense for December 2021 Notes [Table Text Block]

Interest expense for the December 2021 Notes included in the Company’s Consolidated Statements of Operations was as follows:

	Eight Months Ended		Year Ended December 31,
(in thousands)	August 31, 2020		2019		2018
Contractual coupon interest	$	281	$	3,390	$	4,125
Amortization of debt issuance costs	5		64		76
Amortization of debt discount	39		459		542
Amortization of conversion feature	544		5,973		6,611
Total	$	869	$	9,886	$	11,354