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Note 7 - Income Taxes (Detail) - Net Operating Loss Carryforwards (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Net operating loss carryforwards | $ 19,577 | $ 19,619
2012 [Member] |  |
Net operating loss carryforwards |  | 1,038
2019 [Member] |  |
Net operating loss carryforwards | 2,901 | 2,901
2021 [Member] |  |
Net operating loss carryforwards | 1,184 | 1,184
2022 [Member] |  |
Net operating loss carryforwards | 1,083 | 1,083
2023 [Member] |  |
Net operating loss carryforwards | 1,778 | 1,778
Thereafter [Member] |  |
Net operating loss carryforwards | $ 12,631 | $ 11,635

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- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant