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SUBSEQUENT EVENTS (Details) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 01, 2017 | Apr. 19, 2017 $ / shares | Mar. 28, 2017 $ / shares shares | Feb. 27, 2017 Vessel | Jan. 23, 2017 $ / shares | Nov. 30, 2013 shares | Apr. 30, 2013 shares | May 01, 2017 | Dec. 31, 2016 Vessel $ / shares | Dec. 31, 2007 $ / shares
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Number of operating vessels | Vessel |  |  |  |  |  |  |  |  | 29 |
Common shares issued in public offering (in shares) | shares |  |  |  |  |  | 9,343,750 | 11,212,500 |  |  |
Public offering price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 2.75 | $ 115
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Dividend declared (in dollars per share) | $ / shares |  | $ 0.20 |  |  | $ 0.20 |  |  |  |  |
Dividend declare date | Apr. 19, 2017 |  |  |  |  |  |  | Jan. 23, 2017 |  |
Dividend payment date | Jun. 08, 2017 |  |  |  |  |  |  | Feb. 10, 2017 |  |
Number of operating vessels | Vessel |  |  |  | 30 |  |  |  |  |  |
Common shares issued in public offering (in shares) | shares |  |  | 8,000,000 |  |  |  |  |  |  |
Public offering price (in dollars per share) | $ / shares |  |  | $ 1.25 |  |  |  |  |  |  |
Common shares issued in public offering including exercise of underwriters' option (in shares) | shares |  |  | 1,300,000 |  |  |  |  |  |  |
Nordic American Offshore Limited [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Common shares issued in public offering (in shares) | shares |  |  | 41,300,000 |  |  |  |  |  |  |
Public offering price (in dollars per share) | $ / shares |  |  | $ 1.25 |  |  |  |  |  |  |

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