Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Warrants Outstanding) (Details)

v3.22.1
Fair Value Measurements (Warrants Outstanding) (Details)
Mar. 31, 2022
$ / shares
shares
Class of Warrant or Right [Line Items]  
Class of Warrant or Right, Outstanding 338,583
Hale Capital, LLP  
Class of Warrant or Right [Line Items]  
Class of Warrant or Right, Outstanding 238,583
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 2.80
Warrants and Rights Outstanding, Maturity Date Oct. 21, 2026
iStudy Co., Ltd.  
Class of Warrant or Right [Line Items]  
Class of Warrant or Right, Outstanding 100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 2.43
Warrants and Rights Outstanding, Maturity Date Aug. 31, 2028