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401(k) Savings Plan (Tables)
 12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
401(k) Savings Plan These amounts are included in the following captions in the consolidated statements of operations (in thousands):
20212020
Cost of revenue$344 $313 
Sales and marketing626 438 
Research and development518 463 
General and administrative218 183 
Total
$1,706 $1,397