Government assistance	12 Months Ended
Dec. 31, 2020
Unusual or Infrequent Items, or Both [Abstract]
Government assistance	7. Government assistance Paycheck Protection Program (PPP) On April 20, 2020, the Company executed a promissory note (the “Promissory Note”) with Bank of America, N.A., which provided for an unsecured loan in the amount of $1.806 million, pursuant to the PPP under the CARES Act. The loan has a two-year term and bears interest at a fixed rate of 1.0% per annum. Monthly principal and interest payments are deferred for six months after the date of disbursement. The loan may be prepaid at any time prior to maturity with no prepayment penalties. The Promissory Note contains events of default and other provisions customary for a loan of this type. The loan was funded on April 23, 2020. The PPP also provides that this loan may be partially or wholly forgiven if the funds are used for certain qualifying expenses as described in the CARES Act, and later amended by the Paycheck Protection Program Flexibility Act (the "Flexibility Act") signed into law on June 5, 2020. Such forgiveness will be determined, subject to limitations, based on the use of loan proceeds for payment of payroll costs and any payments of mortgage interest, rent, and utilities. While management believes that it is probable that the loan will be forgiven in full, no definite assurance can be provided that forgiveness for any portion of the loan will be obtained. Management's determination that full forgiveness is probable is based on qualification under the Flexibility Act. Management evaluated the legal and contractual terms associated with the loan, and concluded that, although the legal form of the loan is debt, it represents in substance a government grant that is expected to be forgiven. Given the lack of definitive authoritative guidance under GAAP for accounting for government grants, the Company analogized to accounting guidance under International Accounting Standard No. 20, “Accounting for Government Grants and Disclosure of Government Assistance.” Under such guidance, once it is probable that the conditions attached to the assistance will be met, the earnings impact of government grants is recorded on a systematic basis over the periods in which the entity recognizes as expenses the related costs for which the grants are intended to compensate. Accordingly, the Company recognized $1.806 million as a reduction to operating expenses in the Current Year. No interest expense related to the loan has been recorded in the Company’s consolidated financial statements. Economic Incentive Disaster Loan (EIDL) Concurrently with the PPP loan, in May 2020 the Company also received a $10,000 Economic Incentive Disaster Loan (“EIDL”) Advance through the U.S. Small Business Administration. The EIDL Advance represents a grant that does not have to be repaid, and as such, the Company has recognized $10,000 as a reduction to operating expenses in the Current Year. In total between the PPP and EIDL, the Company recognized $1,816,000 as a reduction to operating expenses in the Current Year.

7. Government assistance

Paycheck Protection Program (PPP)

On April 20, 2020, the Company executed a promissory note (the “Promissory Note”) with Bank of America, N.A., which provided for an unsecured loan in the amount of $1.806 million, pursuant to the PPP under the CARES Act. The loan has a two-year term and bears interest at a fixed rate of 1.0% per annum. Monthly principal and interest payments are deferred for six months after the date of disbursement. The loan may be prepaid at any time prior to maturity with no prepayment penalties. The Promissory Note contains events of default and other provisions customary for a loan of this type. The loan was funded on April 23, 2020.

The PPP also provides that this loan may be partially or wholly forgiven if the funds are used for certain qualifying expenses as described in the CARES Act, and later amended by the Paycheck Protection Program Flexibility Act (the "Flexibility Act") signed into law on June 5, 2020. Such forgiveness will be determined, subject to limitations, based on the use of loan proceeds for payment of payroll costs and any payments of mortgage interest, rent, and utilities. While management believes that it is probable that the loan will be forgiven in full, no definite assurance can be provided that forgiveness for any portion of the loan will be obtained. Management's determination that full forgiveness is probable is based on qualification under the Flexibility Act.

Management evaluated the legal and contractual terms associated with the loan, and concluded that, although the legal form of the loan is debt, it represents in substance a government grant that is expected to be forgiven. Given the lack of definitive authoritative guidance under GAAP for accounting for government grants, the Company analogized to accounting guidance under International Accounting Standard No. 20, “Accounting for Government Grants and Disclosure of Government Assistance.” Under such guidance, once it is probable that the conditions attached to the assistance will be met, the earnings impact of government grants is recorded on a systematic basis over the periods in which the entity recognizes as expenses the related costs for which the grants are intended to compensate. Accordingly, the Company recognized $1.806 million as a reduction to operating expenses in the Current Year. No interest expense related to the loan has been recorded in the Company’s consolidated financial statements.

Economic Incentive Disaster Loan (EIDL)

Concurrently with the PPP loan, in May 2020 the Company also received a $10,000 Economic Incentive Disaster Loan (“EIDL”) Advance through the U.S. Small Business Administration. The EIDL Advance represents a grant that does not have to be repaid, and as such, the Company has recognized $10,000 as a reduction to operating expenses in the Current Year.

In total between the PPP and EIDL, the Company recognized $1,816,000 as a reduction to operating expenses in the Current Year.