Warrants (Tables)
9 Months Ended
Sep. 30, 2021
Equity [Abstract]  
Schedule of Stockholders' Equity Note, Warrants or Rights As of each of September 30, 2021 and December 31, 2020, 5,500 warrants to purchase the Company’s common shares were outstanding and
exercisable:
Warrant HolderIssue DateIn Connection WithWarrant to PurchaseSharesExercise PriceExpiration Date
Rockport3/3/2017Loan agreementCommon5,500$3.80 8/28/2022