Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Raw materials	$	8,860		$	10,420
Work-in-process	440			605
Finished goods	9,540			11,245
	18,840			22,270
Less: inventory valuation allowance	(2,379		)	(2,199		)
Inventories, net	$	16,461		$	20,071

Schedule of Inventory Deposit [Table Text Block]

	March 31, 2013			December 31, 2012
Inventory deposit (A)	$	10,659		$	11,637
Less: inventory deposit valuation allowance	(3,086		)	(2,801		)
Inventory deposit, net	$	7,573		$	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
	March 31,
	2013		2012
Inventory, net	$	397	$	453
Inventory deposit, net	641		299
Adverse purchase commitments	(32)		74