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Loans payable (Tables)
6 Months Ended
Jun. 30, 2023
Debt Disclosure [Abstract]  
Components of loans payable The following table shows the component of loans payable (in thousands):
Interest RateJune 30,December 31,
20232022
SIF Loan (1)
Interest free$8,234 $7,293 
TPC Loan, due 2025Interest free$239 $518 
Total loans payable, noncurrent$8,473 $7,811 
Loans payable, current
Term Loan (1)
11.00%$15,700 $— 
TPC Loan, due 2024Interest free$210 $206 
Financing of Directors and Officers Insurance, due 20234.24%$— $1,449 
Other loans payable, current, due 2023Interest free$— $16 
Total loans payable, current$15,910 $1,671 
(1) Refer below for additional information on the repayment period.