FAIR VALUE MEASUREMENTS - Interest Rate Derivatives (Details) - Interest rate derivatives - Cash flow hedges |
12 Months Ended |
|---|---|
|
Dec. 31, 2016
USD ($)
item
| |
| Fair Value Measurements | |
| Number of interest rate derivatives held | 30 |
| Number of mortgage loans outstanding | 30 |
| Notional Amount | $ | $ 141,866,000 |
| Weighted average maturity | 7 years 10 months 24 days |
| Weighted average annual interest rate (as a percent) | 4.21% |
| Minimum | |
| Fair Value Measurements | |
| Fixed Interest Rate (as a percent) | 3.02% |
| Maximum | |
| Fair Value Measurements | |
| Fixed Interest Rate (as a percent) | 5.75% |