Quarterly report pursuant to Section 13 or 15(d)

Credit facilities (Details)

v2.4.0.8
Credit facilities (Details)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended
Mar. 15, 2013
Credit Facility
USD ($)
Mar. 31, 2014
Credit Facility
USD ($)
Mar. 31, 2014
Credit Facility
Base Rate
Mar. 31, 2014
Credit Facility
Euro currency Rate
Mar. 31, 2014
Credit Facility
Index Rate
Mar. 31, 2014
Credit Facility
Minimum
Mar. 31, 2014
Credit Facility
Minimum
Base Rate
Mar. 31, 2014
Credit Facility
Minimum
Euro currency Rate
Mar. 31, 2014
Credit Facility
Minimum
Index Rate
Mar. 31, 2014
Credit Facility
Maximum
Mar. 31, 2014
Credit Facility
Maximum
Base Rate
Mar. 31, 2014
Credit Facility
Maximum
Euro currency Rate
Mar. 31, 2014
Credit Facility
Maximum
Index Rate
Mar. 15, 2013
Swingline loans
USD ($)
Mar. 31, 2014
Letters of credit
USD ($)
Letter
Mar. 15, 2013
Letters of credit
USD ($)
Mar. 31, 2014
Letters of credit
Minimum
Mar. 31, 2014
Letters of credit
Maximum
Mar. 31, 2014
Letter of credit (Other than Revolving Credit Agreement)
USD ($)
Letter
Mar. 31, 2014
Atlantic Innovation Fund of Canada
USD ($)
Installment
Mar. 31, 2014
Atlantic Innovation Fund of Canada
CAD
Mar. 31, 2014
Performance Bonds
USD ($)
Sep. 30, 2013
Performance Bonds
USD ($)
Credit facilities                                              
Term of the credit agreement 5 years                                            
Maximum borrowing capacity $ 100.0                         $ 5.0   $ 30.0         1.8    
Number of letters of credit issued                             4       2        
Amount borrowed   15                                          
Amount borrowed                             6.7       3.0        
Amount repaid   15                                          
Leverage ratio           2.5                                  
Leverage ratio, actual                   0.1                          
Leverage ratio to calculate annual commitment fee (as a percent)                                 0.15% 0.30%          
Variable rate basis     Base Rate Eurocurrency Rate Index Rate                                    
Margin (as a percent)             0.00% 1.00% 1.00%   0.75% 1.75% 1.75%                    
Interest charges (as a percent)                                       0.00% 0.00%    
Amount outstanding                                       1.3 1.4    
Number of remaining quarterly installments                                       33 33    
Performance bond commitments                                           $ 50.5 $ 50.8