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Inventories | 3 Months Ended
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Mar. 31, 2019
Inventories | F. INVENTORIES Inventories, net consisted of the following at March 31, 2019 and December 31, 2018:
|  | March 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
|  | (in thousands) |
Raw material |  | $ | 94,862 |  |  | $ | 89,365 |
Work-in-process |  |  | 29,725 |  |  |  | 31,014 |
Finished goods |  |  | 36,755 |  |  |  | 33,162 |
|  | $ | 161,342 |  |  | $ | 153,541 |
Inventory reserves at March 31, 2019 and December 31, 2018 were $100.9 million and $100.8 million, respectively.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration