Leases Summary of Lease Expense Components, Supplemental Cash Flow Information and Other Information (Details) - USD ($) $ in Thousands	8 Months Ended	12 Months Ended
	Aug. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Jan. 01, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year				$ 37
Operating Lease, Right-of-Use Asset		$ 1,359			$ 2,100
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		Current liabilities:
Operating Lease, Payments	$ 522	$ 762
Operating Lease, Expense	532	760
Short-term Lease, Cost	49	79
Lease, Cost	581	839
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	3,320	2,055
Operating Lease, Liability, Current		$ 760
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		us-gaap:LiabilitiesNoncurrentAbstract
Operating Lease, Liability, Noncurrent		$ 634
Operating Lease, Liability		$ 1,394		$ 75	$ 2,100
Operating Lease, Weighted Average Remaining Lease Term		1 year 10 months 24 days		2 years
Operating Lease, Weighted Average Discount Rate, Percent		6.50%
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two				$ 38
Lessee, Operating Lease, Liability, Payments, Due Year Three				0
Lessee, Operating Lease, Liability, Payments, Due Year Four				0
Lessee, Operating Lease, Liability, Payments, Due Year Five				0
Lessee, Operating Lease, Liability, Payments, Due after Year Five				0
Lessee, Operating Lease, Liability, Payments, Due				75
Lessee, Operating Lease, Liability, Undiscounted Excess Amount				$ 0
Operating Lease, Liability, Statement of Financial Position [Extensible List]				Liabilities:	Liabilities:
Operating Lease, Lease Income	$ 2,139	$ 5,072	$ 5,903