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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Stock-Based Compensation Expense

Stock-based compensation expense recorded in the condensed consolidated statements of income was as follows (in thousands):

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2020				2019				2020				2019
Platform operations		$	2,358			$	1,331			$	3,820			$	2,387
Sales and marketing			6,319				4,831				11,633				8,058
Technology and development			7,844				6,497				16,434				11,433
General and administrative			7,413				8,398				15,012				15,048
Total		$	23,934			$	21,057			$	46,899			$	36,926

Summary of Stock Option Activity

The following summarizes stock option activity:

		Shares Under Option (in thousands)				Weighted- Average Exercise Price
Outstanding as of December 31, 2019			4,064			$	70.74
Granted			278				294.01
Exercised			(970	)			43.04
Cancelled			(95	)			115.45
Outstanding as of June 30, 2020			3,277			$	96.59
Exercisable as of June 30, 2020			1,444			$	44.77

Summary of Restricted Stock Activity

The following summarizes restricted stock activity:

		Shares (in thousands)				Weighted- Average Grant Date Fair Value
Unvested as of December 31, 2019			457			$	120.65
Granted			315				295.54
Vested			(73	)			96.89
Forfeited			(32	)			153.87
Unvested as of June 30, 2020			667			$	204.20

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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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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