Inventories: (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following:

	March 31, 2015		December 31, 2014
Raw material	$	20,912	$	23,006
Work in process	5,126		3,546
Finished goods	11,622		10,381
Total	$	37,660	$	36,933