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INVENTORIES

6 Months Ended

Jun. 30, 2019

INVENTORIES

INVENTORIES

NOTE 6—INVENTORIES

Inventories, which are comprised of chemicals and materials available for resale and parts and consumables used in operations, are valued at the lower of cost and net realizable value, with cost determined under the weighted-average method. The significant components of inventory are as follows:

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​	​	​	​	​	​	​
​	​	June 30, 2019			December 31, 2018
​	​	(in thousands)
Raw materials	​	$	16,685	​	$	15,219
Finished goods	​		22,570	​		28,540
Materials and supplies	​		697	​		1,233
​	​	$	39,952	​	$	44,992

​

During the Current Quarter, Prior Quarter, Current Period and Prior Period, the Company recorded charges to the reserve for excess and obsolete inventory for $0.1 million, $0.1 million, $0.2 million and $0.4 million, respectively, which were recognized within costs of revenue on the accompanying consolidated statements of operations. The reserve for excess and obsolete inventories is determined based on the Company’s historical usage of inventory on hand, as well as future expectations, and the amount necessary to reduce the cost of the inventory to its estimated net realizable value.

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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