Quarterly report pursuant to Section 13 or 15(d)

ACCOUNTS RECEIVABLE

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ACCOUNTS RECEIVABLE
9 Months Ended
Sep. 30, 2021
ACCOUNTS RECEIVABLE  
ACCOUNTS RECEIVABLE

6. ACCOUNTS RECEIVABLE

The components of accounts receivable are as follows (in thousands):

September 30, 

December 31, 

2021

2020

Trade receivables

$

23,257

$

7,016

Allowance for doubtful accounts

(379)

(500)

Total accounts receivable

$

22,878

$

6,516

The following table summarizes activity in the allowance for doubtful accounts (in thousands):

September 30, 

December 31, 

2021

2020

Balance at beginning of period

$

500

$

199

Provision for uncollectible accounts

(316)

377

Uncollectible accounts written off

195

(76)

Balance at end of period

$

379

$

500