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Financial Information by Geographic Area Data | 3 Months Ended
--- | ---
Jun. 30, 2011
Segments, Geographical Areas [Abstract] |
12. Industry Segment and Geographic Area Data | 12. Industry Segment and Geographic Area Data
|  | United States |  |  | Canada |  |  | Consolidated |
|  | (Unaudited) |
|  | (All amounts are in thousands of U.S. $'s) |
Quarter ended June 30, 2011 |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 601,091 |  |  | $ | 41,874 |  |  | $ | 642,965 |
Depreciation and amortization, net of (gains) losses on disposals |  |  | 46,864 |  |  |  | 1,869 |  |  |  | 48,733 |
Interest expense |  |  | 22,470 |  |  |  | 163 |  |  |  | 22,633 |
Pretax earnings |  |  | 118,357 |  |  |  | 7,373 |  |  |  | 125,730 |
Income tax expense |  |  | 45,329 |  |  |  | 2,178 |  |  |  | 47,507 |
Identifiable assets |  |  | 4,026,330 |  |  |  | 148,126 |  |  |  | 4,174,456 |
|  | United States |  |  | Canada |  |  | Consolidated |
|  | (Unaudited) |
|  | (All amounts are in thousands of U.S. $'s) |
Quarter ended June 30, 2010 |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 549,783 |  |  | $ | 36,164 |  |  | $ | 585,947 |
Depreciation and amortization, net of (gains) losses on disposals |  |  | 45,037 |  |  |  | 1,745 |  |  |  | 46,782 |
Interest expense |  |  | 21,310 |  |  |  | 154 |  |  |  | 21,464 |
Pretax earnings |  |  | 99,882 |  |  |  | 6,763 |  |  |  | 106,645 |
Income tax expense |  |  | 38,151 |  |  |  | 1,992 |  |  |  | 40,143 |
Identifiable assets |  |  | 3,758,773 |  |  |  | 120,767 |  |  |  | 3,879,540 |

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- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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