Quarterly report pursuant to Section 13 or 15(d)

RELATED PARTY TRANSACTIONS (Details)

v3.5.0.2
RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Related Party Transaction [Line Items]        
Affiliate payroll service fees reimbursed by the Company $ 15,457 $ 10,826 $ 28,734 $ 20,668
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Management [Member]        
Related Party Transaction [Line Items]        
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party 2,700 1,800 $ 4,900 3,400
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Minimum [Member] | Management [Member]        
Related Party Transaction [Line Items]        
Supervisory and administrative fee agreement of gross revenue, percent     5.00%  
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Maximum [Member] | Management [Member]        
Related Party Transaction [Line Items]        
Supervisory and administrative fee agreement of gross revenue, percent     6.00%  
Payroll Services [Member] | Participating Regional Operator [Member] | Management [Member]        
Related Party Transaction [Line Items]        
Affiliate payroll service fees reimbursed by the Company 4,700 3,200 $ 8,700 6,100
Acquisition Costs [Member] | Due Diligence Costs [Member] | Participating Regional Operator [Member] | Management [Member]        
Related Party Transaction [Line Items]        
Due diligence expenses payable to the PROs $ 200 $ 100 $ 300 $ 100