Annual report pursuant to Section 13 and 15(d)

DEBT FINANCING - Debt Summary (Details)

v3.6.0.2
DEBT FINANCING - Debt Summary (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]      
Total debt including debt issuance costs and debt premiums $ 873,194 $ 564,886  
Unamortized debt issuance costs and debt premium, net 5,760 2,909  
Total debt $ 878,954 $ 567,795  
Line of Credit [Member] | Credit Facility [Member] | Revolving line of credit [Member]      
Debt Instrument [Line Items]      
Effective interest rate 2.17% 2.03% 2.66%
Total debt including debt issuance costs and debt premiums $ 246,500 $ 187,975  
Unsecured Debt [Member] | Credit Facility [Member] | Tranche A Term Loan [Member]      
Debt Instrument [Line Items]      
Effective interest rate 2.61%    
Total debt including debt issuance costs and debt premiums $ 225,000 200,000  
Unsecured Debt [Member] | Credit Facility [Member] | Tranche B Term Loan [Member]      
Debt Instrument [Line Items]      
Effective interest rate 3.15%    
Total debt including debt issuance costs and debt premiums $ 100,000 0  
Unsecured Debt [Member] | Term Loan Facility [Member]      
Debt Instrument [Line Items]      
Effective interest rate 3.08%    
Total debt including debt issuance costs and debt premiums $ 100,000 0  
Mortgages [Member] | Fixed Rate Mortgages [Member]      
Debt Instrument [Line Items]      
Effective interest rate 4.07%    
Total debt including debt issuance costs and debt premiums $ 201,694 $ 176,911  
Total debt $ 212,600