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Earnings per Share (Details) - $ / shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net income (loss) per share (in usd per share) $ 0.02 $ 0.03
Weighted average shares outstanding    
Weighted average shares outstanding for basic EPS (in shares) 24,381,497 24,086,705
Effect of dilutive securities    
Warrants (in shares) 45,833 20,176
Weighted average shares outstanding for diluted EPS (in shares) 24,566,288 24,240,258
Employee stock option    
Effect of dilutive securities    
Share-based payment arrangements (in shares) 7,926 5,770
Options outstanding (shares) 276,320 359,641
Options, outstanding, weighted average exercise price during period (in USD per share) $ 2.86 $ 5.93
Restricted stock units    
Effect of dilutive securities    
Share-based payment arrangements (in shares) 131,032 127,607
Options outstanding (shares) 997,806  
Equity instruments other than options, outstanding, weighted average exercise price during period (in USD per share) $ 3.20  
Warrant    
Effect of dilutive securities    
Options outstanding (shares) 675,000 725,000
Equity instruments other than options, outstanding, weighted average exercise price during period (in USD per share) $ 2.20 $ 2.15