Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment, Net

Schedule of property, plant and equipment, net

	December 31,
	2021		2020
	(in thousands)
Leasehold improvements	$	584	$	584
Furniture, machinery and equipment		1,553		1,553
Computer equipment and software		477		477
Total property, plant and equipment		2,614		2,614
Less: accumulated depreciation		(2,504)		(2,397)
Property, plant and equipment, net	$	110	$	217