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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Activity

The following summarizes the stock option activity for the periods presented:

			Number of options outstanding						Weighted- average exercise price (per share)						Weighted- average remaining contract life (in years)						Aggregate intrinsic value  (in thousands)
Outstanding as of December 31, 2020			255,000						$	10.82					4.42						$	36,426
Granted			—						—
Exercised			(57,817)						13.02												7,697
Forfeited or cancelled			(750)						9.57
Outstanding as of March 31, 2021			196,433						$	10.18					4.18						$	22,897
Options vested and exercisable at March 31, 2021			170,100						$	8.95					3.83						$	20,035
Options vested and expected to vest as of March 31, 2021			195,810						$	10.16					4.18						$	22,828

Summary of Restricted Stock Unit Activity

The following summarizes the RSU activity for the periods presented:

			Number of awards outstanding						Weighted-average grant date fair value (per share)
Nonvested RSUs as of December 31, 2020			450,614						$	51.58
Granted			113,664						153.90
Vested			(141,707)						48.45
Forfeited or cancelled			(16,696)						63.36
Nonvested RSUs as of March 31, 2021			405,875						$	82.33

Schedule of Stock-Based Compensation Expense

The Company recognized total stock-based compensation expense as follows:

															Three months ended March 31,
																					2020						2021
Cost of revenue																					$	175					$	72
Research and development																					453						768
Sales and marketing																					395						614
General and administrative																					1,476						2,936
Total																					$	2,499					$	4,390

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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