Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Business and Summary of Significant Accounting Principles (Business Acquisition) (Details) - USD ($)
 9 Months Ended 12 Months Ended
Feb. 02, 2015
Sep. 30, 2015
Dec. 31, 2015
Noncontrolling Interest [Line Items]      
Consideration paid $ 293,200,000    
Schedule of Consideration Transferred [Abstract]      
Total consideration transfered to ACS 304,838,000    
Non-controlling interest acquisition 303,831,000    
Property and equipment 746,000    
Other intangible assets 261,000    
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests 303,831,000 $ 305,831,000  
Increase in Deferred Tax Assets 24,028,000    
Series of Individually Immaterial Business Acquisitions [Member]      
Other Acquisitions      
Number of Businesses Acquired     3
Business Combination, Consideration Transferred     $ 12,700,000
Non-controlling Interests [Member]      
Schedule of Consideration Transferred [Abstract]      
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests 268,364,000 271,521,000  
Additional Paid-in Capital [Member]      
Schedule of Consideration Transferred [Abstract]      
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests $ 11,439,000 34,310,000  
Other Nonoperating Income (Expense) [Member] | Rights to Receive Future Capacity [Member]      
Noncontrolling Interest [Line Items]      
Fair value adjustment to assets   1,200,000  
Other Nonoperating Income (Expense) [Member] | Rights to Use Capacity [Member]      
Noncontrolling Interest [Line Items]      
Impairment of intangible assets   $ 3,800,000