Annual report pursuant to Section 13 and 15(d)

SIGNIFICANT 2017 BUSINESS DEVEVELOPMENTS - Recipients of Voting and Dispositive Control of Shares (Parenthetical) (Details)

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SIGNIFICANT 2017 BUSINESS DEVEVELOPMENTS - Recipients of Voting and Dispositive Control of Shares (Parenthetical) (Details) - shares
Dec. 31, 2017
Sep. 22, 2017
Dec. 31, 2016
Significant Business Developments [Abstract]      
Total outstanding shares 39,565,591 39,365,591 39,315,591