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Financial Information by Geographic Area Data | 3 Months Ended
--- | ---
Dec. 31, 2011
Segments, Geographical Areas [Abstract] |
13. Industry Segment and Geographic Area Data | 13. Industry Segment and Geographic Area Data
|  | United States |  |  | Canada |  |  | Consolidated |
|  | (Unaudited) |
|  | (All amounts are in thousands of U.S. $'s) |
Quarter ended December 31, 2011 |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 600,609 |  |  | $ | 32,480 |  |  | $ | 633,089 |
Depreciation and amortization, net of (gains) losses on disposals |  |  | 57,983 |  |  |  | 1,957 |  |  |  | 59,940 |
Interest expense |  |  | 22,579 |  |  |  | 165 |  |  |  | 22,744 |
Pretax earnings (loss) |  |  | (2,567 | ) |  |  | 4,696 |  |  |  | 2,129 |
Income tax expense |  |  | 17 |  |  |  | 1,384 |  |  |  | 1,401 |
Identifiable assets |  |  | 4,499,251 |  |  |  | 134,751 |  |  |  | 4,634,002 |
Quarter ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 500,861 |  |  | $ | 29,121 |  |  | $ | 529,982 |
Depreciation and amortization, net of (gains) losses on disposals |  |  | 52,249 |  |  |  | 1,046 |  |  |  | 53,295 |
Interest expense |  |  | 22,077 |  |  |  | 159 |  |  |  | 22,236 |
Pretax earnings |  |  | 25,454 |  |  |  | 3,587 |  |  |  | 29,041 |
Income tax expense |  |  | 9,376 |  |  |  | 1,057 |  |  |  | 10,433 |
Identifiable assets |  |  | 4,032,253 |  |  |  | 123,277 |  |  |  | 4,155,530 |
|  | United States |  |  | Canada |  |  | Consolidated |
|  | (Unaudited) |
|  | (All amounts are in thousands of U.S. $'s) |
Nine months ended December 31, 2011 |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 1,857,795 |  |  | $ | 121,440 |  |  | $ | 1,979,235 |
Depreciation and amortization, net of (gains) losses on disposals |  |  | 153,536 |  |  |  | 5,876 |  |  |  | 159,412 |
Interest expense |  |  | 67,851 |  |  |  | 489 |  |  |  | 68,340 |
Pretax earnings |  |  | 267,811 |  |  |  | 21,518 |  |  |  | 289,329 |
Income tax expense |  |  | 103,027 |  |  |  | 6,340 |  |  |  | 109,367 |
Identifiable assets |  |  | 4,499,251 |  |  |  | 134,751 |  |  |  | 4,634,002 |
Nine months ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 1,646,681 |  |  | $ | 106,224 |  |  | $ | 1,752,905 |
Depreciation and amortization, net of (gains) losses on disposals |  |  | 141,323 |  |  |  | 4,787 |  |  |  | 146,110 |
Interest expense |  |  | 64,988 |  |  |  | 500 |  |  |  | 65,488 |
Pretax earnings |  |  | 254,398 |  |  |  | 17,621 |  |  |  | 272,019 |
Income tax expense |  |  | 96,499 |  |  |  | 5,191 |  |  |  | 101,690 |
Identifiable assets |  |  | 4,032,253 |  |  |  | 123,277 |  |  |  | 4,155,530 |

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