Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock-based compensation expense	$ 109,638	$ 69,656	$ 65,946
Depreciation	32,284	27,423	22,826
Cost of revenue
Stock-based compensation expense	9,933	6,497	6,511
Depreciation	9,763	10,186	10,082
Cost of revenue	18,434	7,282	1,913
Sales and marketing
Stock-based compensation expense	19,575	16,942	16,106
Depreciation	2,451	2,448	2,268
General and administrative
Stock-based compensation expense	40,690	15,487	15,772
Depreciation	452	160	239
Product development
Stock-based compensation expense	39,440	30,730	27,557
Depreciation	$ 19,618	$ 14,629	$ 10,237

Amount of expense for allocation of cost of intangible asset over its useful life directly used in production of good and rendering of service.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (e)
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