Quarterly report pursuant to Section 13 or 15(d)

Related Party Transaction (Details)

v3.5.0.2
Related Party Transaction (Details) - USD ($)
shares in Thousands
1 Months Ended 9 Months Ended
Jul. 11, 2016
Feb. 02, 2015
Sep. 30, 2016
Sep. 30, 2015
Apr. 30, 2008
Dec. 31, 2001
Dec. 31, 1991
Related Party Transaction [Line Items]              
Stock Repurchased and Retired During Period, Value     $ 47,655,000 $ 44,324,000      
Chief Executive Officer [Member]              
Related Party Transaction [Line Items]              
Termination period on lease     12 months        
Monthly Lease Payment     $ 132,000        
Security Deposit           $ 1,500,000  
Security Deposit Termination Period     6 months        
ACS [Member]              
Related Party Transaction [Line Items]              
Payments to related party   $ 6,200,000          
Receipts from Related Parties   $ 8,100,000          
Property | Immediate Family Member of Management or Principal Owner [Member]              
Related Party Transaction [Line Items]              
Capital Lease Obligations         $ 1,300,000   $ 900,000
Common Stock - Class A [Member]              
Related Party Transaction [Line Items]              
Stock Repurchased and Retired During Period, Value     $ 196,000 $ 19,062,000      
Common Stock - Class A [Member] | Investor [Member]              
Related Party Transaction [Line Items]              
Stock Repurchased and Retired During Period, Shares 1,000            
Stock Repurchased and Retired During Period, Value $ 16,100,000