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FAIR VALUE OF FINANCIAL INSTRUMENTS - RECURRING (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Feb. 28, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Aug. 14, 2018 | Jun. 30, 2018 | May 31, 2018 | Nov. 10, 2016 | Nov. 04, 2015
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Floating rate debt | $ 513,685 |  | $ 551,420 |  |  |  |  |  |
Secured Debt | $495 Million Credit Facility |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Floating rate debt | 410,425 |  | 445,000 |  |  |  |  |  |
Face amount of term loan facility | 495,000 | $ 495,000 | 495,000 |  |  |  |  |  |
Secured Debt | $108 Million Credit Facility |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Floating rate debt | 103,260 |  | 106,420 |  |  |  |  |  |
Face amount of term loan facility | 108,000 |  | 108,000 | $ 108,000 | $ 108,000 |  |  |  |
Secured Debt | $460 Million Credit Facility |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Face amount of term loan facility |  |  |  |  |  | $ 460,000 | $ 460,000 |  |
Secured Debt | $400 Million Credit Facility |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Face amount of term loan facility |  |  |  |  |  | 400,000 |  | $ 400,000 |
Line of Credit Facility | $98 Million Credit Facility |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Face amount of term loan facility |  |  |  |  |  | $ 98,000 |  |  | $ 98,000
Carrying Value |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 165,121 |  | 197,499 |  |  |  |  |  |
Restricted cash | 315 |  | 5,262 |  |  |  |  |  |
Floating rate debt | 513,685 |  | 551,420 |  |  |  |  |  |
Fair value |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 165,121 |  | 197,499 |  |  |  |  |  |
Restricted cash | 315 |  | 5,262 |  |  |  |  |  |
Floating rate debt | $ 513,685 |  | $ 551,420 |  |  |  |  |  |

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