Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Lease

The following is a schedule of future minimum lease payments under the non-cancelable operating lease at December 31, 2017 (in thousands):

2018	$	336
2019		346
2020		357
2021		305
Total	$	1,344