Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Commitment on the Remaining Operating Lease

The future minimum commitment on the new operating lease at December 31, 2017 is as follows:

Years ending December 31,
2018	$	341
2019		351
2020		360
2021		370
2022		219
	$	1,641