Annual report pursuant to Section 13 and 15(d)

STOCK OPTION PLANS (Details)

v3.8.0.1
STOCK OPTION PLANS (Details) - $ / shares
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
2015 Equity Incentive Plan [Member]    
Options [Roll Forward]    
Outstanding options, beginning balance (in shares)   1,994,000
Granted (in shares) 1,077,000 2,622,500
Exercised (in shares) (81,719) (151,000)
Expired/forfeited (in shares) (325,314) (22,500)
Outstanding options, ending balance (in shares) 5,112,967 4,443,000
Exercisable, ending balance (in shares) 2,471,135  
Options vested, ending balance (in shares) 1,143,448  
Non-vested options, ending balance (in shares) 2,641,832 3,115,313
Weighted-average exercise price [Roll Forward]    
Outstanding options, beginning of period (in dollars per share) $ 4.94 $ 6.90
Granted (in dollars per share) 14.31 3.29
Exercised (in dollars per share) 4.22 2.32
Expired/forfeited (in dollars per share) 5.52 3.23
Outstanding options, ending balance (in dollars per share) 9.07 4.94
Exercisable, end on period (in dollars per share) 5.48  
Options vested, end on period (in dollars per share) 4.19  
Non-vested option, send on period (in dollars per share) $ 8.21 $ 4.24
2005 Equity Incentive Plan [Member]    
Options [Roll Forward]    
Outstanding options, beginning balance (in shares)   330,084
Expired/forfeited (in shares) (11,800) (1,524)
Outstanding options, ending balance (in shares) 316,760 328,560
Exercisable, ending balance (in shares) 316,760  
Options vested, ending balance (in shares) 317,760  
Weighted-average exercise price [Roll Forward]    
Outstanding options, beginning of period (in dollars per share) $ 14.57 $ 13.49
Expired/forfeited (in dollars per share) 21.53 36.93
Outstanding options, ending balance (in dollars per share) 14.31 $ 14.57
Exercisable, end on period (in dollars per share) $ 14.31