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Note 9 - Subsequent Events (Details) (USD $) | 9 Months Ended | 0 Months Ended | 1 Months Ended |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2012 | Nov. 04, 2013 Subsequent Event [Member] Yellowstone [Member] | Oct. 18, 2013 Subsequent Event [Member] 2020 Notes [Member] | Oct. 18, 2013 Subsequent Event [Member] Senior Credit Facility 2012 [Member] | Nov. 30, 2013 Subsequent Event [Member] | Sep. 30, 2013 2020 Notes [Member] | Dec. 31, 2012 2020 Notes [Member] | Oct. 18, 2013 Senior Credit Facility 2012 [Member]
Note 9 - Subsequent Events (Details) [Line Items] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 23,000,000 |  |  | $ 9,000,000 |  |  |
Business Acquisition, Percentage of Non-Voting Interests Acquired |  | 99.00% |  |  |  |  |  |
Guaranty Liabilities |  |  |  |  | 3,000,000 |  |  |
Debt Instrument, Face Amount |  |  | 375,000,000 |  |  |  |  |
Debt Instrument Premium Discount Percentage |  |  | 102.125% |  |  |  |  |
Proceeds from Issuance of Long-term Debt | 3,000,000 |  | 383,000,000 |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 6.984% |  |  | 7.60% | 7.60% |
Repayments of Senior Debt |  |  |  | $ 376,000,000 |  |  |  | $ 376,000,000

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- Definition This item represents a non-contingent liability for the fair value of an obligation to stand ready to perform over the term of a guaranty issued in the event that specified triggering events or conditions occur. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7661617&loc=d3e11049-110243 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7661617&loc=d3e11019-110243 + Details
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