Quarterly report pursuant to Section 13 or 15(d)

LOANS PAYABLE AND OTHER BORROWINGS - Narrative (Details)

v3.7.0.1
LOANS PAYABLE AND OTHER BORROWINGS - Narrative (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Line of Credit Facility [Line Items]          
Gross borrowings $ 85,000,000 $ 56,000,000 $ 245,000,000 $ 56,000,000  
Gross repayments 145,000,000 $ 56,000,000 260,000,000 $ 56,000,000  
Revolving credit facility [Member] | Line of Credit [Member]          
Line of Credit Facility [Line Items]          
Current borrowing capacity 625,000,000   625,000,000    
Maximum borrowing capacity 725,000,000   725,000,000    
Minimum tangible net worth $ 987,400,000   $ 987,400,000    
Leverage ratio 0.6   0.6    
Interest coverage ratio     1.5    
Outstanding borrowings under Credit Facility $ 0   $ 0   $ 15,000,000
Total LOCs 58,642,000   58,642,000   $ 43,839,000
Remaining borrowing capacity 566,400,000   566,400,000    
Revolving credit facility [Member] | Line of Credit [Member] | Revolving Credit Facility Maturing July 2019 [Member]          
Line of Credit Facility [Line Items]          
Current borrowing capacity $ 60,000,000   $ 60,000,000