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STOCK-BASED COMPENSATION (Details Narrative) - USD ($)
 1 Months Ended 12 Months Ended 164 Months Ended
Jan. 18, 2007
Apr. 30, 2015
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Feb. 28, 2015
May 31, 2014
Dec. 31, 2013
Average share price (in dollars per share)     $ 5.31 $ 3.82        
Unrecognized pre-tax non-cash compensation expense to non-vested option     $ 7,334,000   $ 7,334,000      
Period unrecognized pre-tax non-cash compensation expense to non-vested option     3 years          
Number of shares vested     3,060,000          
General And Administrative Expense [Member]                
Non-cash compensation expense     $ 4,300,000 $ 2,200,000        
Maximum [Member]                
Vesting period     3 years          
Minimum [Member]                
Vesting period     2 years          
Stock Incentive Plan [Member]                
Plan expiration term 10 years              
Number of shares authorized 2,500,000 5,100,000       4,600,000 4,250,000 3,500,000
Stock Incentive Plan 2015 [Member]                
Number of shares authorized   5,000,000            
Description of plan   Provision for an annual increase of 15% to the shares included under the plan, with the shares to be added on the first day of each calendar year, beginning on January 1, 2017            
Purchase of common shares     1,830,000 1,200,000 4,470,000      
Average share price (in dollars per share)         $ 3.80      
Fair value of common shares purchased         $ 5,340,000