Property and Equipment

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Property and Equipment

5. Property and Equipment

As of December 31, 2018 and 2017, property and equipment consisted of the following:

(in thousands)	December 31, 2018			December 31, 2017
Building	$	71,780		$	71,780
Computer equipment		21,448			22,225
Leasehold improvements		56,396			54,004
Furniture, fixtures, and other assets		10,566			10,573
Gross property and equipment		160,190			158,582
Less: Accumulated depreciation		(42,472	)		(27,251	)
Property and equipment, net	$	117,718		$	131,331

Depreciation expense was $19.5 million, $15.9 million and $8.0 million, during the years ended December 31, 2018, 2017 and 2016, respectively.