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Summary of significant accounting policies (Tables)
3 Months Ended
Mar. 31, 2023
Accounting Policies [Abstract]  
Reconciliation of cash

    

End of

    

Beginning of

 

period-

 

period-

 

March 31, 

 

December 31, 

 

2023

2022

Cash and cash equivalents

$

167,495

$

279,834

Restricted cash noncurrent included in deposits and other assets

 

16,099

 

16,091

Restricted cash current included in prepaid expenses and other current assets

50,000

Total Cash, cash equivalents and restricted cash per statement of cash flows

$

233,594

$

295,925

Schedule of Inventory

    

March 31, 2023

    

December 31, 2022

Raw materials

$

1,097

$

1,078

Work in progress

 

18,438

 

14,074

Finished goods

 

7,114

 

6,656

Total inventory

$

26,649

$

21,808