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Inventories

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

Note 7. Inventories

As of December 31, 2016 and 2017, inventories consisted of the following:

		December 31,
		2016			2017
		(in thousands)
Finished goods		$	54,357			46,365
Work in process			57,076			54,084
Raw materials			38,273			34,220
Supplies			42			531
		$	149,748			135,200

Inventory write-downs were $9,785 thousand, $23,342 thousand and $12,298 thousand for the years ended December 31, 2015, 2016 and 2017, respectively, and are included in cost of revenues.

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- References

No definition available.

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- Definition

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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