FAIR VALUE MEASUREMENTS (Details Narrative) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Quoted Prices In Active Markets (Level 1) [Member]
Cash equivalents fair value	$ 10,100	$ 17,300

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