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Reportable Segments (Tables)
 6 Months Ended
Jun. 30, 2017
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,
 
2017
 
2016
 
2017
 
2016
Sales
 
 
 
 
 
 
 
Energy & Chemicals
$
40,018

 
$
61,195

 
$
79,885

 
$
99,154

Distribution & Storage
137,518

 
129,600

 
250,776

 
237,097

BioMedical
60,677

 
56,300

 
111,647

 
104,601

Consolidated
$
238,213

 
$
247,095

 
$
442,308

 
$
440,852

Operating Income (Loss)
 
 
 
 
 
 
 
Energy & Chemicals
$
(2,568
)
 
$
22,124

 
$
(2,749
)
 
$
19,926

Distribution & Storage
16,577

 
13,005

 
28,170

 
22,835

BioMedical
9,848

 
10,552

 
14,848

 
17,204

Corporate
(13,922
)
 
(10,742
)
 
(30,087
)
 
(24,989
)
Consolidated
$
9,935

 
$
34,939

 
$
10,182

 
$
34,976