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Note 11 - Fair Value of Financial Instruments (Detail) - Fair Value Measurements, Not Recorded (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Carrying Value [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Long Term Debt | $ 5,125 | $ 5,880
Carrying Value [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Long Term Debt | 235,179 | 236,759
Carrying Value [Member] |  |
Long Term Debt | 240,304 | 242,639
Fair Value, Inputs, Level 1 [Member] | Industrial Revenue Bond [Member] |  |
Long Term Debt | 5,125 | 5,880
Fair Value, Inputs, Level 2 [Member] | Term Loan [Member] |  |
Long Term Debt | 57,604 | 66,354
Fair Value, Inputs, Level 2 [Member] | Revolver [Member] |  |
Long Term Debt | 177,575 | 170,405
Industrial Revenue Bond [Member] |  |
Long Term Debt | 5,125 | 5,880
Term Loan [Member] |  |
Long Term Debt | 57,604 | 66,354
Revolver [Member] |  |
Long Term Debt | $ 177,575 | $ 170,405

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 5: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: 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 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant