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Acquisitions, Dispositions and Other Transactions (Acquisition) (Details) - USD ($)
$ in Thousands
Mar. 24, 2015
Dec. 04, 2014
Business Acquisition [Line Items]    
Interest rate   4.00%
Kleeneze Limited    
Business Acquisition [Line Items]    
Percentage of voting interests acquired 100.00%  
Consideration $ 5,100  
Payments to Acquire Businesses, Gross 2,100  
Other consideration transferred 1,900  
Kleeneze Limited | Secured Debt    
Business Acquisition [Line Items]    
Cash consideration transferred $ 3,000  
Kleeneze Limited | Secured Debt | HSBC Bank PLC    
Business Acquisition [Line Items]    
Debt instrument, term 2 years  
Interest rate 1.10%  
Kleeneze Limited | Secured Debt | HSBC Bank PLC | Bank of England Base Rate    
Business Acquisition [Line Items]    
Basis spread on variable interest rate (as a percent) 0.60%