Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Business and Summary of Significant Accounting Principles Business and Summary of Significant Accounting Principles (Wireless Acquisition) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Feb. 02, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Noncontrolling Interest [Line Items]        
Total consideration transfered to ACS $ 304,838      
Non-controlling interest acquisitions 303,831      
Property and equipment 746 $ 176,235 $ 176,109 $ 180,554
Other intangible assets 261      
Non-controlling interest acquisition   281,803    
Increase in Deferred Tax Assets 24,028      
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 $ 11,439 $ 10,282