Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event Subsequent Event (Details)

v3.5.0.2
Subsequent Event Subsequent Event (Details) - USD ($)
$ in Thousands
 6 Months Ended
Aug. 01, 2016
Jul. 29, 2016
Jul. 11, 2016
Jun. 30, 2016
Jun. 30, 2015
Subsequent Event [Line Items]          
Stock Repurchased and Retired During Period, Value       $ 20,532 $ 36,939
Tower Sites [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Proceeds from Sale of Machinery and Equipment $ 91,000        
Common Stock - Class A [Member]          
Subsequent Event [Line Items]          
Stock Repurchased and Retired During Period, Value       $ 196 $ 18,808
Common Stock - Class A [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Stock Repurchased and Retired During Period, Shares     1,000,000    
Stock Repurchased and Retired During Period, Value     $ 16,100    
Kodiak Kenai Fiber Link [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Business Combination, Consideration   $ 20,000