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Inventories
12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories

Inventories at December 31, 2015 and 2014 were as follows (in thousands):
 
December 31,
 
2015
 
2014
 
 
 
 
Pipe and connectors
$
137,245

 
$
185,076

Finished goods
4,020

 
4,291

Work in progress
5,230

 
3,363

Raw materials, components and supplies
14,768

 
11,278

Total inventories
$
161,263

 
$
204,008