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Note 8 - Income Taxes (Details) - Unrecognized tax benefits (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012 | Jul. 01, 2012 | Dec. 31, 2011
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Unrecognized tax benefits [Abstract] |  |  |  |
Balance | $ 7,508 | $ 7,508 | $ 6,779 | $ 6,779
Balance | $ 7,508 | $ 7,508 | $ 6,779 | $ 6,779

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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