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Inventories (Tables)
 6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory, Noncurrent
Inventories, net of reserves, consist of the following:
 
 
 
June 30,

‎
2018
 
 
December 31,

‎
2017
 
(in thousands)
 
 
 
 
 
 
Refrigerants and cylinders
 
$
131,556
 
 
$
174,262
 
Less: reserves
 
 
(15,108
)
 
 
(1,777
)
Total
 
$
116,448
 
 
$
172,485