Note 9 - Subsequent Events (Details Textual) $ in Trillions	Jul. 13, 2020 USD ($)
Subsequent Event [Member]
Cash and Short Term Investment, Minimum	$ 1

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios, and adherence to certain clauses which must be met in order to avoid default. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

No definition available.

Name:	thmo_CashAndShortTermInvestmentMinimum
Namespace Prefix:	thmo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant