Inventories (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

In thousands	March 31 2013	December 31 2012
Raw materials	$1,955	$1,644
Work-in-progress	376	393
Finished goods	448	431
Invetories, Total	$2,779	$2,468

In thousands	2012	2011
Raw materials	$1,644	$1,826
Work-in-progress	393	449
Finished goods	431	600
Invetories, Total	$2,468	$2,875