Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

The estimated useful lives, by asset class, are as follows:

Computer equipment	3 years
Software, including internal-use software	1 to 10 years
Office equipment	5 years
Furniture and fixtures	7 years

Property and equipment at December 31, 2016 and 2015 consisted of the following (in thousands):  

	2016			2015
Computer equipment	$	9,568		$	8,148
Software, including internal-use software	68,980			59,718
Office equipment and furniture	5,073			4,778
Leasehold improvements	3,040			2,498
	86,661			75,142
Less accumulated depreciation	(54,005		)	(42,461		)
	$	32,656		$	32,681