Annual report pursuant to Section 13 and 15(d)

Credit facilities (Details)

v2.4.0.6
Credit facilities (Details)
In Millions, unless otherwise specified
12 Months Ended 12 Months Ended 12 Months Ended
Sep. 30, 2012
Credit Facility
USD ($)
item
Jan. 25, 2008
Credit Facility
USD ($)
Sep. 30, 2012
Credit Facility
Federal Funds rate
Jan. 25, 2008
Swingline loans
USD ($)
Jan. 25, 2008
Letters of credit
USD ($)
Sep. 30, 2012
Letters of credit held by a customer
USD ($)
item
Sep. 30, 2012
Letters of credit issued in relation to the Company's insurance policies
USD ($)
item
Sep. 30, 2012
Letter of credit (Other than Revolving Credit Agreement)
USD ($)
item
Sep. 30, 2012
Atlantic Innovation Fund of Canada
USD ($)
item
Sep. 30, 2012
Atlantic Innovation Fund of Canada
CAD
item
Sep. 30, 2012
Performance Bonds
USD ($)
Sep. 30, 2011
Performance Bonds
USD ($)
Credit facilities                        
Amount outstanding                 $ 1.7 1.7    
Maximum borrowing capacity under loan                   1.8    
Maximum borrowing capacity   35.0   5.0 25.0              
Optional expanded maximum borrowing capacity   75.0                    
Variable interest rate base     federal funds effective rate                  
Percentage points added to the reference rate     0.50%                  
Number of letters of credit issued 5         3 2 2        
Amount outstanding 15.5         15.2 0.3 3.0        
Current borrowing capacity 19.5                      
Number of quarterly installments                 40 40    
Performance bond commitments                     $ 48.0 $ 16.9