Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following (in thousands):

	June 30, 2013			December 31, 2012
Raw materials	$	9,954		$	10,420
Work-in-process	1,132			605
Finished goods	8,505			11,245
	19,591			22,270
Less: inventory valuation allowance	(2,253		)	(2,199		)
Inventories, net	$	17,338		$	20,071

Schedule of Inventory Deposit [Table Text Block]

	June 30, 2013			December 31, 2012
Inventory deposit (A)	$	10,896		$	11,637
Less: inventory deposit valuation allowance	(3,174		)	(2,801		)
Inventory deposit, net	$	7,722		$	8,836

Charges Associated with Inventory [Table Text Block]

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

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2013		2012		2013		2012
Inventory, net	$	260	$	578	$	657	$	1,031
Inventory deposit, net	169		64		810		363
Adverse purchase commitments	164		(102)		132		(28)