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Other Financial Statement Information (Tables)
 12 Months Ended
Dec. 31, 2021
Other Financial Information [Abstract]  
Summary of Changes in the Allowance
Changes in the allowance consisted of the following (in thousands):
Year Ended December 31,
202120202019
Beginning balance$5,256 $2,461 $1,939 
Add: amounts recognized as a reduction of revenue6,610 6,493 2,996 
(Less) add: bad debt expense recognized in general and administrative expense(279)2,170 — 
Less: write-offs, net of recoveries(7,527)(5,868)(2,474)
Ending balance$4,060 $5,256 $2,461 
Summary of Prepaid Expenses and Other Current Assets
Prepaid expenses and other current assets consisted of the following (in thousands):
As of December 31,
20212020
Prepaid expenses$10,957 $7,177 
Deferred cost of revenue1,819 1,967 
Capitalized cloud computing development costs867 — 
Income tax receivable831 716 
Other current assets2,115 676 
Total prepaid expenses and other current assets$16,589 $10,536 
Summary of Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
As December 31,
20212020
Accrued payroll and related expenses$21,858 $16,135 
Accrued vendor payables18,239 10,854 
Derivative liabilities and hybrid debt— 5,131 
Sales allowances4,862 4,856 
Accrued sales, use and business taxes2,678 1,789 
Other3,180 2,263 
Total accrued expenses and other current liabilities$50,817 $41,028 
Schedule of Changes in Sales Allowance
Changes in sales allowances relating to charge-backs, sales credits and refunds consisted of the following (in thousands):
Year Ended December 31,
202120202019
Beginning balance$4,856 $4,651 $4,483 
Add: increase in sales allowances7,998 9,976 10,387 
Less: utilization of reserves(7,992)(9,771)(10,219)
Ending balance$4,862 $4,856 $4,651 
Summary of Depreciation and Amortization Expense
Depreciation and amortization expense of our property and equipment, including capitalized internal-use software, and intangible assets consisted of the following (in thousands):
Year Ended December 31,
202120202019
Cost of revenue$6,430 $8,324 $6,773 
Sales and marketing6,017 6,913 6,469 
Technology and development2,361 2,800 1,055 
General and administrative1,878 2,060 2,093 
Total depreciation and amortization expense$16,686 $20,097 $16,390