Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies- Earnings Per Share (Details)

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Summary of Significant Accounting Policies- Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Net income (loss) $ 2,719 $ (1,781) $ (5,562) $ (3,705)
Basic weighted-average shares outstanding (shares) 46,064,049 45,465,529 45,987,447 45,396,765
Effect of dilutive securities, Stock options (shares) 509,642 0 0 0
Diluted weighted-average shares outstanding (shares) 46,573,691 45,465,529 45,987,447 45,396,765
Common Stock
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Securities excluded from computation of earnings per share     716,695 987,663
Stock Options
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Securities excluded from computation of earnings per share 1,811,928 2,475,556 1,781,928 2,532,853