v3.5.0.2
Inventories
6 Months Ended
Jun. 30, 2016
Inventory Disclosure [Abstract]  
Inventories
(6) Inventories

Inventories consisted of the following:


June 30,
2016
 
December 31,
2015
 
 
 
 
 
(in thousands)
Finished goods
$
9,317

 
$
9,589

Raw materials and precious metals
10,089

 
9,055

Parts and supplies
33,707

 
18,885

Total inventories
$
53,113

 
$
37,529