XML 88 R49.htm IDEA: XBRL DOCUMENT v3.2.0.727
Stock-Based Compensation (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation cost $ 13.7   $ 13.7  
Unrecognized stock-based compensation cost, weighted-average period recognized 1 year 8 months 6 days      
Supplemental Incentive Accrual - Change in Period     0.4  
Supplementary Incentive Plan Accrual     1.4  
Annual Incentive Plan and Long Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense for stock based compensation awards $ 2.6 $ 2.4 $ 4.8 $ 5.0