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Reportable Segments (Tables)
 6 Months Ended
Jun. 30, 2016
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
The following table represents information for the Company’s reportable segments and its corporate function:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
Sales
 
 
 
 
 
 
 
Energy & Chemicals
$
61,195

 
$
91,339

 
$
99,154

 
$
178,809

Distribution & Storage
129,600

 
121,813

 
237,097

 
226,884

BioMedical
56,300

 
57,100

 
104,601

 
109,664

Consolidated
$
247,095

 
$
270,252

 
$
440,852

 
$
515,357

Operating Income (Loss) (1)
 
 
 
 
 
 
 
Energy & Chemicals
$
22,124

 
$
19,540

 
$
19,926

 
$
34,831

Distribution & Storage
13,005

 
10,845

 
22,835

 
21,157

BioMedical
10,552

 
6,000

 
17,204

 
9,236

Corporate
(10,742
)
 
(11,256
)
 
(24,989
)
 
(25,138
)
Consolidated
$
34,939

 
$
25,129

 
$
34,976

 
$
40,086