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Note 11 - Segment Information (Details) - Net Sales for Geographic Areas (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Geographical | $ 83,430,912 us-gaap_SalesRevenueNet | $ 78,284,585 us-gaap_SalesRevenueNet | $ 72,720,624 us-gaap_SalesRevenueNet
UNITED STATES |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Geographical | 69,791,099 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 65,371,652 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 61,041,650 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US
CANADA |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Geographical | 6,342,896 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CA | 8,004,320 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CA | 7,496,840 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CA
All Other Countries [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Geographical | $ 5,296,917 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = tlf_AllOtherCountriesMember | $ 4,908,613 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = tlf_AllOtherCountriesMember | $ 4,182,134 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = tlf_AllOtherCountriesMember

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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