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Note 13 - Notes Payable (Detail) - Notes Payable (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Balance (in Dollars) | $ 3,192,127 |  | $ 2,983,886 |
Senior Notes [Member] |  |  |  |
Balance (in Dollars) | 965,900 | [1] | 1,164,800 |
Interest Rate Range (Low) | 4.70% |  | 4.70% |
Interest Rate Range (High) | 6.88% |  | 6.88% |
Medium-term Notes [Member] |  |  |  |
Balance (in Dollars) | 1,144,600 |  | 1,161,600 |
Interest Rate Range (Low) | 4.30% |  | 4.30% |
Interest Rate Range (High) | 5.78% |  | 5.98% |
Unsecured Debt [Member] |  |  |  |
Balance (in Dollars) | 400,000 |  |  |
Interest Rate Range (Low) | 1.26% |  |  |
Interest Rate Range (High) | 1.26% |  |  |
Canadian Notes Payable [Member] |  |  |  |
Balance (in Dollars) | 352,400 |  | 342,600 |
Interest Rate Range (Low) | 5.18% |  | 5.18% |
Interest Rate Range (High) | 5.99% |  | 5.99% |
Line of Credit [Member] |  |  |  |
Balance (in Dollars) | 249,900 |  | 238,900 |
Interest Rate Range (Low) | 1.10% | [2] | 1.35% | [2]
Interest Rate Range (High) | 1.26% | [2] | 1.35% | [2]
Mexican Term Loan [Member] |  |  |  |
Balance (in Dollars) | 76,900 |  | 71,500 |
Interest Rate Range (Low) | 8.58% |  | 8.58% |
Interest Rate Range (High) | 8.58% |  | 8.58% |
Notes Payable, Other Payables [Member] |  |  |  |
Balance (in Dollars) | $ 2,400 |  | $ 4,500 |
Interest Rate Range (Low) | 5.50% | [3] | 3.80% | [3]
Interest Rate Range (High) | 5.50% | [3] | 3.80% | [3]
[1] | During January 2013, the Company repaid the $100.0 million outstanding balance on its 6.125% senior unsecured note, which matured in January 2013.
[2] | Interest rate is equal to LIBOR + 1.05%
[3] | Interest rate is equal to LIBOR + 3.50%

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- Definition When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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