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Note 6 - Employee Benefit and Savings Plan (Details) - Contributions to 401(k) Plan (USD $)	0 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Contributions to 401(k) Plan [Abstract]
Maximum Matching Contribution per Participant*	$ 10,400us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount	[1]	$ 10,200us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount	[1]	$ 7,500us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount	[1]
Total Matching Contribution	$ 286,224us-gaap_DefinedContributionPlanCostRecognized		$ 301,434us-gaap_DefinedContributionPlanCostRecognized		$ 308,567us-gaap_DefinedContributionPlanCostRecognized
[1] Due to the annual limit on eligible earnings imposed by the Internal Revenue Code

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- Details

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Namespace Prefix:	tlf_
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Period Type:	duration

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

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- Definition

Maximum amount the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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