XML 93 R68.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity (Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Weighted-Average Fair Value per Share        
Weighted-Average Fair Value per Share, Options granted (in dollars per share) $ 3.23 $ 3.01 $ 3.76  
Weighted-Average Fair Value per Share, Options, expired (in dollars per share) $ 4.90      
Share-based compensation expense $ 4,333 $ 2,741 $ 1,077  
Stock Options [Member]        
Number of Options Outstanding        
Number of Options Outstanding at beginning of period (in shares) 778,388 665,210 357,991  
Number of Options Outstanding, options granted (in shares) 137,586 420,616 386,797  
Number of Options Outstanding, options exercised (in shares) (43,101) (106,338) (435)  
Number of Options Outstanding, options forfeited (in shares) (75,251) (201,100) (79,143)  
Number of Options Outstanding, options expired (in shares) (37,903)      
Number of Options Outstanding at end of period (in shares) 759,719 778,388 665,210 357,991
Number of Options Outstanding, Options vested and expected to vest (in shares) 747,736 769,142 149,907  
Number of Options Outstanding, Options vested and exercisable (in shares) 482,731 244,631 149,907  
Weighted-Average Exercise Price        
Weighted-Average Exercise Price, beginning of period (in dollars per share) $ 5.75 $ 4.39 $ 1.40  
Weighted-Average Exercise Price, options granted (in dollars per share) 7.74 6.93 7.03  
Weighted-Average Exercise Price, options exercised (in dollars per share) 4.93 2.17 1.77  
Weighted-Average Exercise Price, options forfeited (in dollars per share) 7.01 5.62 3.87  
Weighted-Average Exercise Price, options expired (in dollars per share) 4.94      
Weighted-Average Exercise Price, end of period (in dollars per share) 6.06 5.75 4.39 $ 1.40
Weighted-Average Exercise Price, Options vested and expected to vest (in dollars per share) 6.04 5.72 1.58  
Weighted-Average Exercise Price, Options vested and exercisable (in dollars per share) $ 5.41 $ 3.78 $ 1.58  
Weighted-Average Remaining Contractual Life (in years) 7 years 8 months 23 days 8 years 4 months 21 days 8 years 9 months 11 days 9 years 1 month 28 days
Weighted-Average Remaining Contractual Life, Options vested and expected to vest (in years) 7 years 8 months 13 days 8 years 4 months 13 days 7 years 9 months 22 days  
Weighted-Average Remaining Contractual Life, Options vested and exercisable (in years) 7 years 3 months 1 day 6 years 10 months 28 days 7 years 9 months 22 days  
Weighted-Average Fair Value per Share        
Weighted-Average Fair Value per Share, beginning (in dollars per share) $ 5.75 $ 2.37 $ 0.79  
Weighted-Average Fair Value per Share, Options granted (in dollars per share) 3.23 6.93 3.76  
Weighted-Average Fair Value per Share, Options exercised (in dollars per share) 2.54 2.24 0.93  
Weighted-Average Fair Value per Share, Options forfeited (in dollars per share) 3.69 4.99 2.09  
Weighted-Average Fair Value per Share, ending (in dollars per share) $ 2.84 $ 5.75 $ 2.37 $ 0.79
Aggregate intrinsic value of options vested $ 800 $ 600    
Aggregate intrinsic value of options outstanding 2,200 1,300    
Aggregate intrinsic value of options exercised 100 600    
Aggregate intrinsic value of option vested and expected to vest 2,200 1,300    
Total fair value of employee options vested during the period $ 1,000 $ 800    
Weighted-average grant date fair value of unvested shares (in dollars per share) $ 3.45 $ 3.53    
Unrecognized compensation costs $ 800      
Unrecognized compensation costs, period of recognition (in years) 1 year 4 months 21 days      
Proceeds from exercise of stock options $ 212      
Excess tax benefit recognized 402      
Tax benefit to be recognized $ 148