Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Inventories [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following:	(in thousands)
	June 30,	December 31,
	2012	2011
Inventory work-in-process, January 1	$  897	$   787
Production	254	302
Spoilage	(44)	(192)
Inventory work-in-process, end of period	$1,107	$   897