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Inventories

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

(7)   Inventories

Inventories are comprised of the following:

​	​	​		​	​		​
		As of June 30, 2018			As of December 31, 2017
​	​	​		​	​		​
		(Dollars in thousands)
Inventories:
Raw materials		$	73,349		$	39,434
Work in process		109,091			85,852
Finished goods		68,888			48,865
​	​	​		​	​		​
Total		$	251,328		$	174,151
​	​	​		​	​		​

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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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