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Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property and equipment
Property and equipment, gross	$ 21,239	$ 15,036
Less accumulated depreciation and amortization	(9,426)	(7,948)
Property and equipment, net	11,813	7,088
Depreciation and amortization expense	2,400	1,200	$ 700
Computers, software and equipment
Property and equipment
Property and equipment, gross	16,292	10,874
Furniture and fixtures
Property and equipment
Property and equipment, gross	173	152
Leasehold and tenant improvements
Property and equipment
Property and equipment, gross	$ 4,774	$ 4,010

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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