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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
The following table presents the changes in goodwill:
 
December 31,
 
2016
 
2015
Beginning balance
$
218,390

 
$
405,522

Foreign currency translation adjustments and other
(420
)
 
(1,887
)
Goodwill acquired during the year
—

 
10,601

Impairment loss
—

 
(195,846
)
Ending balance
$
217,970

 
$
218,390

 
 
 
 
Accumulated goodwill impairment loss
$
195,846

 
$
195,846

The following table represents the changes in goodwill by segment:
 
Energy &
Chemicals
 
Distribution & Storage
 
BioMedical
 
Total
Balance at January 1, 2015
$
92,638

 
$
157,248

 
$
155,636

 
$
405,522

Foreign currency translation adjustments and other
(162
)
 
(1,909
)
 
184

 
(1,887
)
Goodwill acquired during the year
—

 
10,601

 
—

 
10,601

Impairment loss
(64,603
)
 
—

 
(131,243
)
 
(195,846
)
Balance at December 31, 2015
27,873

 
165,940

 
24,577

 
218,390

Foreign currency translation adjustments and other
—

 
(420
)
 
—

 
(420
)
Balance at December 31, 2016
$
27,873

 
$
165,520

 
$
24,577

 
$
217,970

 
 
 
 
 
 
 
 
Accumulated goodwill impairment loss
$
64,603

 
$
—

 
$
131,243

 
$
195,846
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Table Text Block]
The following table displays the gross carrying amount and accumulated amortization for finite-lived intangible assets and indefinite-lived intangible assets (exclusive of goodwill)(1):
  
December 31, 2016
 
December 31, 2015
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Gross
Carrying
Amount
 
Accumulated
Amortization
Finite-lived intangible assets:
 
 
 
 
 
 
 
Unpatented technology
$
8,186

 
$
(3,132
)
 
$
8,530

 
$
(2,660
)
Patents
1,235

 
(695
)
 
7,770

 
(6,753
)
Trademarks and trade names
4,918

 
(2,198
)
 
10,052

 
(6,886
)
Customer relationships
119,320

 
(81,614
)
 
138,223

 
(90,180
)
Land use rights
12,650

 
(860
)
 
13,484

 
(567
)
Total finite-lived intangible assets
$
146,309

 
$
(88,499
)
 
$
178,059

 
$
(107,046
)
Indefinite-lived intangible assets:
 
 
 
 
 
 
 
Trademarks and trade names
$
35,633

 
 
 
$
35,701

 
 

_______________
(1) 
Amounts include the impact of foreign currency translation. Fully amortized or impaired amounts are written off.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
The Company estimates amortization expense to be recognized during the next five years as follows:
For the Year Ending December 31,
 
2017
$
10,400

2018
9,800

2019
9,800

2020
8,200

2021
2,100