Note 4 - Stock-based Compensation - Unrecognized Compensation Expense for Nonvested Restricted Stock Awards (Details)	Mar. 31, 2018 USD ($)
2018	$ 71,158
2019	58,125
2020	14,853
2021	$ 1,209

Unrecognized cost of unvested share-based compensation awards due during the remainder of the fiscal year.

No definition available.

Name:	tlf_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainderOfFiscalYear
Namespace Prefix:	tlf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant