Note 11 - Stockholders' Equity - Unrecognized Compensation Expense for Non-vested Restricted Stock Awards (Details) - Restricted Stock [Member]	Dec. 31, 2017 USD ($)
2017	$ 100,127
2018	58,126
2019	14,853
2020	$ 1,208

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