Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Narrative (Details)

v3.7.0.1
FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized losses forecasted to be included in earnings transferred from AOCI in the next twelve months $ 1.6    
Level 2 [Member] | Recurring [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fixed rate mortgages, fair value disclosure $ 204.4   $ 214.0
Weighted average market interest rate 3.92% 3.89%  
Weighted average contractual interest rate 5.21% 5.25%  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Notional amount $ 595.0   425.0
Weighted average remaining term 4 years 3 months    
Weighted average fixed rate 1.51%    
Reported Value Measurement [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fixed rate mortgages, fair value disclosure $ 191.9   $ 201.7