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Business Combinations Business Combinations (Tables)
 6 Months Ended
Jun. 30, 2018
Business Acquisition [Line Items]  
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
The following table summarizes the preliminary purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed:
 
Six Months Ended
 
June 30, 2018
Detail of acquisitions:
 

Assets acquired:
 

Operating supplies
$
22

Equipment
1,869

Deposits and other
65

Intangibles
1,194

Goodwill
1,013

Liabilities assumed
(629
)
Debt issued for purchases of businesses
(990
)
Cash paid
$
2,544