FAIR VALUE MEASUREMENTS (Details Narrative) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - fair value	$ 116.3	$ 120.4

Fair value portion of demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

No definition available.

Name:	tnxp_CashEquivalentsFairValue
Namespace Prefix:	tnxp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant