Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following (in thousands):



	June 30, 2016			December 31, 2015
Raw materials	$	20,496		$	14,546
Work-in-process	39			98
Finished goods	9,315			7,485
	29,850			22,129
Less: inventory valuation allowance	(6,549		)	(5,317		)
Inventories, net	$	23,301		$	16,812

Charges Associated with Inventory [Table Text Block]

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



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2016		2015		2016		2015
Inventory, net	$	2,237	$	312	$	2,503	$	272
Adverse purchase commitments^(A)	(1,393)		431		(1,114)		1,007
Net charges	$	844	$	743	$	1,389	$	1,279


(A)	When the Company takes possession of inventory reserved for under the adverse purchase liability (Note 8 — Commitments and Contingencies), the associated liability is transferred from other accrued liabilities to the excess and obsolete inventory valuation allowance.

Deferred cost of sales, which are directly associated with deferred revenue on shipments to customers, was $0.0 million and $14.1 million at June 30, 2016 and December 31, 2015.