v3.8.0.1

PERPETUAL CUMULATIVE CONVERTIBALE PREFERRED STOCK (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Preferred Units [Line Items] |  |  |
Convertible Preferred Stock Shares Issued Upon Conversion | 1.9 |  |
Preferred Stock to Cash Redemption Percentage | 100.00% |  |
Loss on retirement of Preferred | $ 200 |  |
Preferred Stock Carrying Value [Abstract] |  |  |
Preferred Stock, Shares Issued | 0 | 11 |
Acquisition Price Paid Using Convertible Preferred Stock | $ 0 | $ 27,500 |
Payment of fees associated with the issuance of preferred stock | 0 | 0 | $ (220)
Accrued Preferred Stock Dividend | 0 | 452 |
Perpetual Convertible Preferred Stock, Value, Issued | $ 0 | $ 27,732 |
Maximum [Member] |  |  |
Preferred Units [Line Items] |  |  |
Preferred Stock Dividend Rate [Percentage] | 12.00% |  |
Minimum [Member] |  |  |
Preferred Units [Line Items] |  |  |
Preferred Stock Dividend Rate [Percentage] | 6.00% |  |

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