Leases (Tables)

6 Months Ended

Jun. 30, 2019

Components of Lease Costs Included in Operating Expenses

The components of lease costs, which were included in operating expenses in our Condensed Consolidated Statements of Operations, were as follows (in thousands):



	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Operating lease cost	$	2,957	$	1,886	$	5,914	$	3,724
Variable lease cost	1,781		1,182		3,054		2,275
Total lease costs	$	4,738	$	3,068	$	8,968	$	5,999

Summary of Maturities of Operating Lease Liabilities

As of June 30, 2019, the maturities of our operating lease liabilities were as follows (in thousands):



Year ended December 31,
2019 (Six months ended)	$	4,417
2020	9,690
2021	12,671
2022	13,087
2023	13,515
2024	13,956
2025 and thereafter	78,233
Total lease payments	145,569
Less: portion representing interest	(43,021		)
Less: lease incentives	(3,977		)
Operating lease liabilities	98,571
Less: current portion	(3,749		)
Operating lease liabilities, less current portion	$	94,822