Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments under Noncancelable Operating Leases

Future minimum lease payments under noncancelable operating leases as of December 31, 2018 were as follows (in thousands):

2019	$	5,526
2020	5,560
2021	5,593
2022	5,708
2023	5,869
Thereafter	13,458
	$	41,714