|
Credit facilities (Details)
In Millions, unless otherwise specified |
0 Months Ended | 9 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 15, 2013
Credit Facility
USD ($)
|
Jun. 30, 2013
Credit Facility
Minimum
|
Jun. 30, 2013
Credit Facility
Maximum
|
Mar. 15, 2013
Swingline loans
USD ($)
|
Jun. 30, 2013
Letters of credit
USD ($)
Item
|
Mar. 15, 2013
Letters of credit
USD ($)
|
Jun. 30, 2013
Letter of credit (Other than Revolving Credit Agreement)
USD ($)
Item
|
Jun. 30, 2013
Atlantic Innovation Fund of Canada
USD ($)
Item
|
Jun. 30, 2013
Atlantic Innovation Fund of Canada
CAD
|
Jun. 30, 2013
Performance Bonds
USD ($)
|
Sep. 30, 2012
Performance Bonds
USD ($)
|
|
| Credit facilities | |||||||||||
| Term of the credit agreement | 5 years | ||||||||||
| Maximum borrowing capacity | $ 100 | $ 5 | $ 30 | ||||||||
| Number of letters of credit issued | 5 | 2 | |||||||||
| Amount outstanding | 15.5 | 3.0 | |||||||||
| Leverage ratio | 2.5 | ||||||||||
| Leverage ratio, actual | 0.5 | ||||||||||
| Maximum borrowing capacity under loan | 1.8 | ||||||||||
| Interest charges (as a percent) | 0.00% | 0.00% | |||||||||
| Number of remaining quarterly installments | 36 | 36 | |||||||||
| Amount outstanding | 1.5 | 1.6 | |||||||||
| Performance bond commitments | $ 50.9 | $ 48.0 | |||||||||