Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 866 $ 694
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 31,672,731 31,585,696
Common stock, shares outstanding 30,794,405 30,729,784
Treasury stock, shares 878,326 855,912