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STOCKHOLDERS' EQUITY (Details 2) - USD ($) |  | 12 Months Ended
--- | --- | ---
Mar. 20, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Stockholders' Equity |  |  |  |
Cash distributions declared per share of common stock (in dollars per share) |  | $ 1.58 | $ 1.50 | $ 1.42
Common shares issued under the Distribution Reinvestment Plan |  | 197,000 | 227,000 | 210,000
Maximum aggregate sales price of shares to be sold under an Equity Offering Sales Agreement (in dollars) | $ 38,360,000 |  |  |
Number of shares sold (in shares) |  | 295,190 | 179,051 |
Proceeds from sale of shares, net of commission and before offering costs |  | $ 6,581,000 | $ 3,890,000 |
Payment of commissions on sale of shares |  | 66,000 | 39,000 |
Payment of Offering Costs on Sale of Shares |  | $ 124,000 | $ 122,000 |
Maximum |  |  |  |
Stockholders' Equity |  |  |  |
Discount rate (as a percent) |  | 5.00% |  |

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