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Note 7 - Debt (Details) (USD $) In Millions, unless otherwise specified |  |  |  |  | 9 Months Ended |  | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Jun. 30, 2013 | Jan. 29, 2013 | Dec. 31, 2012 | Sep. 30, 2013 Federal Funds Rate [Member] Base Rate Loans [Member] | Sep. 30, 2013 LIBOR [Member] Base Rate Loans [Member] | Sep. 30, 2013 Base Rate Loans [Member] | Sep. 30, 2013 LIBOR [Member] | Sep. 30, 2013 LIBOR [Member] | Sep. 30, 2013 Minimum [Member] LIBOR [Member] | Sep. 30, 2013 Minimum [Member] | Sep. 30, 2013 Maximum [Member] LIBOR [Member] | Sep. 30, 2013 Maximum [Member]
Note 7 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) |  | $ 85.0 | $ 95.0 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount (in Dollars) | 0.3 |  |  | 0.3 |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 0.50% | 1.00% |  |  |  | 1.50% | 0.50% | 2.25% | 1.25%
Debtor-in-Possession Financing, Fee on Unused Borrowings |  |  |  |  |  |  |  |  |  |  | 1.50% |  | 2.25%
Line of Credit Facility, Amount Outstanding (in Dollars) | 8.9 |  |  |  |  |  | 1.9 | 7.0 |  |  |  |  |
Letters of Credit Outstanding, Amount (in Dollars) | 39.0 |  |  | 39.6 |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars) | 40.0 |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End | 5.00% |  |  |  |  |  |  |  | 2.30% |  |  |  |
Debt, Secured with a Cross Default Feature (in Dollars) | $ 157.4 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of the fee that accompanies borrowing money under the debt instrument. + 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(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount borrowed under the credit facility 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 19, 22 -Article 5 + Details
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