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Business Acquisitions (Tables)
12 Months Ended
Dec. 31, 2016
Business Combinations [Abstract]  
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
Purchase Price Allocation. The allocation of the purchase price for the Company’s acquisitions for the years ended December 31 was as follows (in thousands):
 
2016
 
2015
 
2014
Restricted cash
$
275

 
$

 
$

Trade and other receivables
2,187

 

 
31,079

Other current assets
150

 

 
1,925

Investments, at Equity, and Advances to 50% or Less Owned Companies
(3,437
)
 

 
(49,968
)
Property and Equipment
17,132

 

 
519

Goodwill

 
3,157

 
44,967

Intangible Assets
7,098

 
(3,157
)
 
24,901

Other Assets

 

 
111

Accounts payable
238

 

 
(1,709
)
Other current liabilities
(13
)
 

 
(12,274
)
Long-Term Debt
(3,091
)
 

 
(3,266
)
Deferred Income Taxes

 

 
91

Other Liabilities

 

 
(1,376
)
Purchase price(1)
$
20,539

 
$

 
$
35,000

______________________
(1)
Purchase price is net of cash acquired totaling $0.9 million and $0.4 million in 2016 and 2014, respectively.