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EQUITY INCENTIVE PLAN (Stock Option Activity) (Details) - Stock Options
 12 Months Ended
Dec. 31, 2015
$ / shares
shares
Number of Options  
Balance at beginning of period (in shares) | shares 685,984
Granted (in shares) | shares 665,560
Forfeited (in shares) | shares (154,189)
Expired (in shares) | shares (89,561)
Balance at end of period (in shares) | shares 1,107,794
Exercisable at end of period (in shares) | shares 417,968
Weighted Average Exercise Price  
Balance at beginning of period (in usd per share) | $ / shares $ 6.56
Granted (in usd per share) | $ / shares 1.50
Forfeited (in usd per share) | $ / shares 4.72
Expired (in usd per share) | $ / shares 10.57
Balance at end of period (in usd per share) | $ / shares 3.45
Exercisable at end of period (in usd per share) | $ / shares $ 5.28