Property, Plant and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

2.       Property, Plant and Equipment

	Depreciable lives (in years)
		(in thousands)
		2016		2015
Machinery and equipment	5 to 12	$	2,675	$	2,675
Leasehold improvements	15		1,833		1,833
Property, plant and equipment, at cost			4,508		4,508
Less accumulated depreciation			2,902		2,721
Property, plant and equipment, net		$	1,606	$	1,787