Property and equipment, net (Tables)

6 Months Ended

Jun. 30, 2018

Property and equipment, net

Schedule of property and equipment, net

	June 30,		December 31,
	2018		2017
	(in thousands)
Office equipment	$	16,361	$	14,674
Laboratory equipment		57,409		48,807
Computer equipment		54,191		51,351
Land		5,350		5,350
Building and leasehold improvements		222,063		214,245
		355,374		334,427
Less accumulated depreciation and amortization		(87,788)		(74,664)
Property and equipment, net	$	267,586	$	259,763