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Subsequent Events (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended
Nov. 14, 2012
Nov. 09, 2012
Oct. 09, 2012
Sep. 30, 2012
Jan. 31, 2012
Dec. 31, 2011
Nov. 08, 2012
Restricted Stock [Member]
Nov. 08, 2012
Maximum [Member]
Restricted Stock [Member]
Nov. 08, 2012
Minimum [Member]
Restricted Stock [Member]
Nov. 08, 2012
Vesting date between November, 2014 and November, 2016 [Member]
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Restricted stock awarded to certain employees             73,000      
Restricted stock, vesting in period             13,833     59,167
Restricted stock, vesting date               2016-11 2013-11  
Grant date fair value of restricted stock awards             $ 0.6      
Subsequent Events (Textual) [Abstract]                    
Additional borrowings under the Credit Agreement   15 14 106 123 113        
Borrowings outstanding under the Credit Agreement 135                  
Outstanding letters of credit 1.1     1.1            
Additional borrowings outstanding letter of credit $ 63.9