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Accounts Payable (Notes)
3 Months Ended
Mar. 31, 2021
Accounts Payable [Abstract]  
Accounts and Notes Payable Accounts Payable
Accounts payable consist of the following:
March 31,
2021
December 31,
2020
Accounts payable—third parties$568 $529 
Accounts payable to related parties— 
Notes payable and current portion of long-term debt34 
Accounts payable$603 $536