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Note 7 - Income Taxes (Details) - Income Before Income Taxes (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 7 - Income Taxes (Details) - Income Before Income Taxes [Line Items] |  |  |
| $ 11,807,610 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | $ 11,220,759 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | $ 8,945,645 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Internal Revenue Service (IRS) [Member] |  |  |
Note 7 - Income Taxes (Details) - Income Before Income Taxes [Line Items] |  |  |
United States | 10,339,632 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember | 9,920,099 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember | 7,941,689 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember
Her Majesty's Revenue and Customs (HMRC) [Member] |  |  |
Note 7 - Income Taxes (Details) - Income Before Income Taxes [Line Items] |  |  |
Income before income taxes | 557,776 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_HerMajestysRevenueAndCustomsHMRCMember | 565,538 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_HerMajestysRevenueAndCustomsHMRCMember | 509,426 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_HerMajestysRevenueAndCustomsHMRCMember
Canada Revenue Agency [Member] |  |  |
Note 7 - Income Taxes (Details) - Income Before Income Taxes [Line Items] |  |  |
Income before income taxes | 874,571 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember | 858,532 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember | 999,609 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember
Australian Taxation Office [Member] |  |  |
Note 7 - Income Taxes (Details) - Income Before Income Taxes [Line Items] |  |  |
Income before income taxes | 102,922 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember | 69,905 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember | (210,372)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember
Tax Authority, Spain [Member] |  |  |
Note 7 - Income Taxes (Details) - Income Before Income Taxes [Line Items] |  |  |
Income before income taxes | $ (67,291)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_TaxAuthoritySpainMember | $ (193,315)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_TaxAuthoritySpainMember | $ (294,707)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_TaxAuthoritySpainMember

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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35710027&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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