|
Business segments (Details 2) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Revenues and total long-lived assets | |||||||||||
| Revenues | $ 384,339 | $ 334,323 | $ 326,351 | $ 286,266 | $ 300,737 | $ 266,353 | $ 243,452 | $ 239,603 | $ 1,331,279 | $ 1,050,145 | $ 929,633 |
| Total long-lived assets | 128,480 | 95,408 | 128,480 | 95,408 | |||||||
|
United States
|
|||||||||||
| Revenues and total long-lived assets | |||||||||||
| Revenues | 999,419 | 775,871 | 630,812 | ||||||||
| Total long-lived assets | 88,812 | 56,188 | 88,812 | 56,188 | |||||||
|
Canada
|
|||||||||||
| Revenues and total long-lived assets | |||||||||||
| Total long-lived assets | 24,135 | 24,110 | 24,135 | 24,110 | |||||||
|
Australia
|
|||||||||||
| Revenues and total long-lived assets | |||||||||||
| Revenues | 157,383 | 163,482 | 176,814 | ||||||||
| Total long-lived assets | 9,459 | 10,358 | 9,459 | 10,358 | |||||||
|
Rest of World
|
|||||||||||
| Revenues and total long-lived assets | |||||||||||
| Revenues | 174,477 | 110,792 | 122,007 | ||||||||
| Total long-lived assets | $ 6,074 | $ 4,752 | $ 6,074 | $ 4,752 | |||||||