Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum rental commitments under all non-cancelable operating leases are as follows (in thousands):

Year Ending December 31,
2018	$	308
2019	88
2020	23
	$	419