Inventories (Tables)

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following (in thousands):

	September 30, 2014			December 31, 2013
Raw materials	$	12,833		$	22,416
Work-in-process	609			1,194
Finished goods	10,330			9,644
	23,772			33,254
Less: inventory valuation allowance	(6,726		)	(7,845		)
Inventories, net	$	17,046		$	25,409

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,
	2014		2013		2014		2013
Inventory, net	$	875	$	280	$	2,219	$	1,454
Adverse purchase commitments	378		271		532		403