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Financial Statement Components (Tables)
 3 Months Ended
Mar. 31, 2021
Financial Statement Components [Abstract]  
Schedule of Accounts Receivable, net, and Allowance for Doubtful Accounts
Accounts receivable, net of allowances consist of the following:
As of December 31,As of March 31,
20202021
Trade accounts receivable$26,504 $22,591 
Unbilled accounts receivable27,692 28,490 
Allowance for doubtful accounts and reserve for expected credit losses
(1,203)(1,218)
Other accounts receivable2,250 1,595 
Total accounts receivable, net$55,243 $51,458 

Components of allowance for doubtful accounts and reserve for expected credit losses are as follows:
Three months ended March 31,
20202021
Allowance for doubtful accounts:
Balance, beginning of period$(769)$(1,203)
Charged to bad debt expense(189)(48)
Deductions (1)75 10 
Impact of foreign currency translation— 23 
Balance, end of period$(883)$(1,218)
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(1) Write off of uncollectible accounts after all collection efforts have been exhausted.
Schedule of Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following:
As of December 31,As of March 31,
20202021
Accrued expense$31,549 $32,476 
Accrued compensation and benefits19,534 11,531 
Accrued sales, use, VAT and telecommunications related taxes9,142 9,114 
Other accrued expenses2,657 2,588 
Current portion of finance lease183 175 
Total accrued expenses and other current liabilities$63,065 $55,884