Quarterly report pursuant to Section 13 or 15(d)

DEBT FINANCING - Narrative (Details)

v3.5.0.2
DEBT FINANCING - Narrative (Details)
6 Months Ended
Jun. 30, 2016
USD ($)
May 06, 2016
USD ($)
component
Jun. 30, 2016
USD ($)
Line of Credit [Member] | Credit Facility [Member]      
Debt Instrument [Line Items]      
Increase in credit facility   $ 125,000,000.0  
Current borrowing capacity   $ 675,000,000  
Number of lender agreement components | component   3  
Debt instrument, covenant compliance, maximum leverage ratio   60.00%  
Debt instrument, covenant compliance, minimum interest coverage ratio   1.5  
Debt instrument, covenant compliance, required minimum net worth   $ 682,600,000.0  
Debt instrument, covenant compliance, required minimum net worth, addition to base, percent of equity issuances   75.00%  
Debt instrument, covenant compliance, maximum unsecured debt to unencumbered asset ratio   60.00%  
Debt instrument, covenant compliance, unencumbered net operating income to unsecured interest expense ratio   2.0  
Line of Credit [Member] | Credit Facility [Member] | Federal Funds Effective Swap Rate [Member]      
Debt Instrument [Line Items]      
Borrowing rate spread   0.50%  
Line of Credit [Member] | Credit Facility [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Borrowing rate spread   1.00%  
Line of Credit [Member] | Credit Facility [Member] | Minimum [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold   1.35%  
Elective leverage based margin threshold   0.85%  
Line of Credit [Member] | Credit Facility [Member] | Minimum [Member] | Base Rate [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold   0.35%  
Elective leverage based margin threshold   0.00%  
Line of Credit [Member] | Credit Facility [Member] | Maximum [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold   2.15%  
Elective leverage based margin threshold   2.30%  
Line of Credit [Member] | Credit Facility [Member] | Maximum [Member] | Base Rate [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold   1.15%  
Elective leverage based margin threshold   1.30%  
Line of Credit [Member] | Credit Facility [Member] | Tranche A Term Loan [Member]      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 225,000,000  
Line of Credit [Member] | Credit Facility [Member] | Revolving line of credit [Member]      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 350,000,000.0  
Revolver extension fee, percent     0.15%
Remaining borrowing capacity $ 240,100,000   $ 240,100,000
Line of Credit [Member] | Credit Facility [Member] | Revolving line of credit [Member] | Minimum [Member]      
Debt Instrument [Line Items]      
Elective unused borrowing capacity fee   0.15%  
Unused borrowing capacity fee   $ 0.00125  
Line of Credit [Member] | Credit Facility [Member] | Revolving line of credit [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Elective unused borrowing capacity fee   0.25%  
Unused borrowing capacity fee   $ 0.00300  
Line of Credit [Member] | Credit Facility [Member] | Tranche B Term Loan [Member]      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 100,000,000  
Unsecured Debt [Member] | Term Loan Facility [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 100,000,000   100,000,000
Unsecured Debt [Member] | Term Loan Facility [Member] | Federal Funds Effective Swap Rate [Member]      
Debt Instrument [Line Items]      
Borrowing rate spread 0.50%    
Unsecured Debt [Member] | Term Loan Facility [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Borrowing rate spread 1.00%    
Unsecured Debt [Member] | Term Loan Facility [Member] | Minimum [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold 1.75%    
Elective leverage based margin threshold 1.50%    
Unsecured Debt [Member] | Term Loan Facility [Member] | Minimum [Member] | Base Rate [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold 0.75%    
Elective leverage based margin threshold 0.50%    
Unsecured Debt [Member] | Term Loan Facility [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 200,000,000   $ 200,000,000
Unsecured Debt [Member] | Term Loan Facility [Member] | Maximum [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold 2.35%    
Elective leverage based margin threshold 2.45%    
Unsecured Debt [Member] | Term Loan Facility [Member] | Maximum [Member] | Base Rate [Member]      
Debt Instrument [Line Items]      
Leverage based margin threshold 1.35%    
Elective leverage based margin threshold 1.45%    
Mortgages [Member] | Fixed Rate Mortgages [Member]      
Debt Instrument [Line Items]      
Minimum effective interest rate     2.43%
Maximum effective interest rate     5.00%