XML 82 R63.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock-based Compensation: Incentive Award Plan and Employee Stock Purchase Plan Stock-based Compensation: Incentive Award Plan and Employee Stock Purchase Plan (Range of Prices) (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price, low end of the range (in dollars per share) $ 4.44  
Exercise price, high end of the range (in dollars per share) $ 16.51  
Options outstanding (in shares) 859,945.000  
Options outstanding - weighted average remaining contractual life (years) 4 years 9 months 18 days 5 years 7 months 6 days
Options outstanding - weighted average exercise price (in dollars per share) $ 10.61 $ 9.83
Options exercisable - at the end of period (in shares) 691,349.000  
Options exercisable - weighted average exercise price (in dollars per share) $ 10.34  
$2.82 - 6.68
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price, low end of the range (in dollars per share) $ 4.44  
Exercise price, high end of the range (in dollars per share) $ 8.26  
Options outstanding (in shares) 255,250.00  
Options outstanding - weighted average remaining contractual life (years) 4 years 9 months 18 days  
Options outstanding - weighted average exercise price (in dollars per share) $ 6.62  
Options exercisable - at the end of period (in shares) 214,351.00  
Options exercisable - weighted average exercise price (in dollars per share) $ 6.34  
$6.86 - 10.20
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price, low end of the range (in dollars per share) $ 8.38  
Exercise price, high end of the range (in dollars per share) $ 11.39  
Options outstanding (in shares) 272,121.00  
Options outstanding - weighted average remaining contractual life (years) 5 years 1 month 6 days  
Options outstanding - weighted average exercise price (in dollars per share) $ 10.90  
Options exercisable - at the end of period (in shares) 196,831.00  
Options exercisable - weighted average exercise price (in dollars per share) $ 11.08  
$10.46 - 11.39
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price, low end of the range (in dollars per share) $ 11.56  
Exercise price, high end of the range (in dollars per share) $ 12.90  
Options outstanding (in shares) 213,724.00  
Options outstanding - weighted average remaining contractual life (years) 3 years 1 month 6 days  
Options outstanding - weighted average exercise price (in dollars per share) $ 12.39  
Options exercisable - at the end of period (in shares) 213,724.00  
Options exercisable - weighted average exercise price (in dollars per share) $ 12.39  
$11.56 - 12.90
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price, low end of the range (in dollars per share) $ 13.31  
Exercise price, high end of the range (in dollars per share) $ 13.58  
Options outstanding (in shares) 43,850.00  
Options outstanding - weighted average remaining contractual life (years) 3 years 3 months 18 days  
Options outstanding - weighted average exercise price (in dollars per share) $ 13.32  
Options exercisable - at the end of period (in shares) 43,006.00  
Options exercisable - weighted average exercise price (in dollars per share) $ 13.31  
$12.91 - 16.51
    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price, low end of the range (in dollars per share) $ 16.51  
Exercise price, high end of the range (in dollars per share) $ 16.51  
Options outstanding (in shares) 75,000.00  
Options outstanding - weighted average remaining contractual life (years) 8 years 8 months 12 days  
Options outstanding - weighted average exercise price (in dollars per share) $ 16.51  
Options exercisable - at the end of period (in shares) 23,437.00  
Options exercisable - weighted average exercise price (in dollars per share) $ 16.51