Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Lease, Cost [Table Text Block]

	December 31,
	2019
	(in thousands)
Operating cash flows from operating leases in lease liability measurement	$	148
Operating cash flows from short term leases		103
Remaining long-term lease term in years		2.4
Discount rate		10	%

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

	December 31,
	2019
	(in thousands)
2020		178
2021		182
2022		76
Total future minimum lease payments		436
Less: imputed interest		(50	)
Total liabilities	$	386