XML 111 R92.htm IDEA: XBRL DOCUMENT v2.4.0.8
Leases - Lease Rental Payments (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Leases (Textual) [Abstract]      
Rental payments under the terms of operating lease $ 2.7 $ 2.7 $ 2.6
Percentage of increase under lease agreement (in hundredths) 2.00%    
Total rent expense under operating lease agreements $ 23.8 $ 20.1 $ 14.4