Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following (in thousands):

	March 31, 2014		December 31, 2013
Raw materials	$	10,278	$	10,765
Work in process	944		534
Finished goods	19,753		20,158
Total	$	30,975	$	31,457