Commitment and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Payments under Non-Cancelable Operating Leases

Future minimum payments under non-cancelable operating leases as of December 31, 2017 are as follows:

	Amounts
Year ending December 31,	(in thousands)
2018	$	254
2019		181
2020		178
2021		165
Thereafter		134
Total minimum lease payments	$	912