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Note 9 - 401(k) Profit Sharing, Deferred Compensation and Long-term Incentive Plans (Details) - Summary Related to Long-term Incentive Plan (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Summary Related to Long-term Incentive Plan [Abstract] |  |  |
Compensation expense (millions) | $ 1.4 | $ 1.2 | $ 0.9
Total discretionary contribution (millions) | $ 2.1 | $ 1.9 | $ 1.3
Guaranteed annual return | 5.25% | 5.90% | 6.00%

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- Definition The annual return percentage guaranteed on balances in an employee's deferred compensation account + References No definition available. + Details
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- Details
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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement. + References No definition available. + Details
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