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Inventories
9 Months Ended
Sep. 30, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories

Inventories at September 30, 2015 and December 31, 2014 were as follows (in thousands):
 
September 30,
 
December 31,
 
2015
 
2014
Pipe and connectors
$
150,432

 
$
185,076

Finished goods
4,085

 
4,291

Work in progress
4,523

 
3,363

Raw materials, components and supplies
14,455

 
11,278

Total inventories
$
173,495

 
$
204,008