|
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 | ||||||||||