Inventories (Tables)

9 Months Ended

Sep. 30, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following (in thousands):

	September 30, 2015			December 31, 2014
Raw materials	$	12,470		$	9,219
Work-in-process	552			1,195
Finished goods	7,367			10,762
	20,389			21,176
Less: inventory valuation allowance	(4,780		)	(2,701		)
Inventories, net	$	15,609		$	18,475

Charges Associated with Inventory [Table Text Block]

The Company recorded the following charges associated with the valuation of inventory and the adverse purchase commitment liability (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2015		2014		2015		2014
Inventory, net	$	806	$	875	$	1,078	$	2,219
Adverse purchase commitments	527		378		1,534		532