Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. The estimated useful lives, by asset class, are as follows:

Computer equipment	3 years
Software, including internal-use software	1 to 5 years
Office equipment	5 years
Furniture and fixtures	7 years

Property and equipment at December 31, 2018 and 2017, respectively, consisted of the following (in thousands):  

	2018			2017
Computer equipment	$	12,258		$	10,985
Software, including internal-use software	82,426			78,410
Office equipment and furniture	7,315			6,111
Buildings	49,169			—
Leasehold improvements	4,394			3,576
Total Property and Equipment, Gross	155,562			99,082
Less accumulated depreciation	(72,629		)	(62,368		)
Property and Equipment, Net	$	82,933		$	36,714