Annual report pursuant to Section 13 and 15(d)

Leases (Details)

v2.4.0.6
Leases (Details) (USD $)
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Leases      
Rent expense $ 37,600,000 $ 32,000,000 $ 30,200,000
Maximum contingent lease rental expenses caused by CPI escalators in lease agreements 200,000    
Minimum future payments under leases      
2013 36,395,000    
2014 28,048,000    
2015 21,459,000    
2016 10,081,000    
2017 8,473,000    
Thereafter 9,302,000    
Total minimum lease payments $ 113,758,000