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Note 9 - Credit Facilities and Capital Leases (Detail) (USD $) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2013 | Apr. 30, 2013 | Dec. 31, 2012 | Oct. 31, 2009
Line of Credit Facility, Maximum Borrowing Capacity | $ 100,000,000 | $ 150,000,000 |  | $ 60,000,000
Debt Instrument, Covenant Description | 2.50 |  |  |
Capital Leases Including Purchase Option | 22,700,000 |  |  |
Capital Lease Obligations, Current | 7,294,000 |  | 5,564,000 |
Capital Lease Obligations, Noncurrent | 15,389,000 |  | 11,935,000 |
Capital Lease Obligations | 22,511,000 |  | 17,500,000 |
Capital Leases, Future Minimum Payments Due | 23,628,000 |  | 1,100,000 |
Senior Leverage Ratio [Member] |  |  |  |
Debt Instrument, Covenant Description | 4.50 |  |  |
Leverage Ratio [Member] |  |  |  |
Debt Instrument, Covenant Description | 4.00 |  |  |
Interest Coverage Ratio [Member] |  |  |  |
Debt Instrument, Covenant Description | 3.0 |  |  |
Tangible Net Worth [Member] |  |  |  |
Debt Instrument, Covenant Description | 80% |  |  |
Positive Quarterly Net Income [Member] |  |  |  |
Debt Instrument, Covenant Description | 50% |  |  |
LIBOR [Member] | Minimum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.00% |  |  |
LIBOR [Member] | Maximum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.75% |  |  |
Alternative Base Rate [Member] | Minimum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.00% |  |  |
Alternative Base Rate [Member] | Maximum [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.75% |  |  |
Minimum [Member] |  |  |  |
Standby Fee Percentage | 0.825% |  |  |
Maximum [Member] |  |  |  |
Standby Fee Percentage | 1.05% |  |  |
Amortization of Loan Origination Fees [Member] |  |  |  |
Interest Expense, Debt | 100,000 |  |  |
Commitment Fees On Credit Agreement [Member] |  |  |  |
Interest Expense, Debt | $ 300,000 |  |  |

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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