Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property and Equipment, Net
Finance lease right-of-use assets	$ 7,354	$ 10,045
Property and equipment and finance lease, gross	235,992	204,165
Less: accumulated depreciation	(117,266)	(98,110)
Total	118,726	106,055
Computer equipment and software
Property and Equipment, Net
Property and equipment gross	115,516	107,666
Internal-use software development costs
Property and Equipment, Net
Property and equipment gross	113,019	86,454
Furniture, equipment and building improvements
Property and Equipment, Net
Property and equipment gross	$ 103	$ 0

Amount, before accumulated amortization, of right-of-use asset from finance lease.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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