Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies

Schedule of future minimum lease payments under non-cancelable operating leases and purchase commitments

Future minimum lease payments under non-cancelable operating leases and purchase commitments are (in thousands):

	Operating
Year ended December 31,	leases
2018	$	213
2019		219
2020		187
Total minimum payments	$	619