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Trade Accounts Receivable
3 Months Ended
Mar. 31, 2022
Receivables [Abstract]  
Trade Accounts Receivable Trade Accounts ReceivableThe allowance for credit losses, which was $1.5 million and $2.1 million as of March 31, 2022 and December 31, 2021, respectively, is our best estimate of the amount of probable credit losses included in our existing accounts receivable.
The following summarizes activity within our trade accounts receivable allowance for credit losses balance (in thousands):
Allowance for Credit Losses
Balance as of December 31, 2021$2,057 
Current-period provision for expected credit losses(500)
Writeoffs charged against the allowance(64)
Balance as of March 31, 2022$1,493 
For the three months ended March 31, 2022, we recognized a reversal of $0.5 million of our provision for expected credit losses. Improved market conditions for customers due to higher commodity prices was the primary factor contributing to the decrease to the allowance for credit losses for the three months ended March 31, 2022.
For the three months ended March 31, 2021, we recognized a reversal of $1.3 million of our provision for expected credit losses. Improved market conditions for customers due to the recovery in commodity prices was the primary factor contributing to the decrease to the allowance for credit losses for the