Inventories: (Tables)

9 Months Ended

Sep. 30, 2011

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following:

	September 30, 2011		December 31, 2010
Raw material	$	24,262	$	22,805
Work in process	3,721		3,806
Finished goods	15,380		17,445
Total	$	43,363	$	44,056