Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Business and Summary of Significant Accounting Principles (Wireless Acquisition) (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Feb. 02, 2015
Nov. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Noncontrolling Interest [Line Items]          
Payments to acquire assets and interest $ 293,200        
Impairment of intangible assets       $ 1,306  
Total consideration transfered to ACS 304,838        
Non-controlling interest acquisitions 303,831        
Property and equipment 746 $ 49,794 $ 194,478 176,235 $ 176,109
Other intangible assets 261        
Non-controlling interest acquisition     14,445 281,803  
Increase in Deferred Tax Assets 9,583        
Non-controlling Interests          
Noncontrolling Interest [Line Items]          
Non-controlling interest acquisition 268,364     271,521  
Paid-in Capital          
Noncontrolling Interest [Line Items]          
Non-controlling interest acquisition 25,884   14,445 10,282  
Other Income (Expense) [Member]          
Noncontrolling Interest [Line Items]          
Gain from adjustment to fair value     $ 3,100    
Other Income (Expense) [Member] | Rights to Receive Future Capacity [Member]          
Noncontrolling Interest [Line Items]          
Gain from adjustment to fair value $ 1,200        
Other Income (Expense) [Member] | Rights to Use Capacity          
Noncontrolling Interest [Line Items]          
Impairment of intangible assets       $ 3,800