Quarterly report pursuant to Section 13 or 15(d)

Business and Summary of Significant Accounting Principles (Business Acquisition) (Details)

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Business and Summary of Significant Accounting Principles (Business Acquisition) (Details) - USD ($)
$ in Thousands
 6 Months Ended
Feb. 02, 2015
Jun. 30, 2015
Property, Plant and Equipment [Line Items]    
Total consideration transfered to ACS $ 304,838  
AWN non-controlling interest 303,831 $ 303,831
Property and equipment 746  
Other intangible assets 261  
Noncontrolling Interest [Member]    
Property, Plant and Equipment [Line Items]    
AWN non-controlling interest 268,364 268,364
Additional Paid-in Capital [Member]    
Property, Plant and Equipment [Line Items]    
AWN non-controlling interest 35,467 35,467
Rights to Receive Future Capacity [Member]    
Property, Plant and Equipment [Line Items]    
Fair value adjustment to assets 1,200  
Rights to Use Capacity [Member]    
Property, Plant and Equipment [Line Items]    
Impairment of intangible assets   $ 3,800
ACS Wireless [Member]    
Property, Plant and Equipment [Line Items]    
Consideration paid $ 293,200