XML 47 R31.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories (Tables)
 9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories at September 30, 2017 and December 31, 2016 were as follows (in thousands):
 
September 30,
 
December 31,
 
2017
 
2016
Pipe and connectors
$
88,982

 
$
102,360

Finished goods
16,063

 
14,257

Work in progress
8,644

 
7,099

Raw materials, components and supplies
19,272

 
15,363

Total inventories
$
132,961

 
$
139,079