Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

A summary of future minimum rental payments required under operating leases that have initial or remaining terms in excess of one year as of December 31, 2018 are as follows (in thousands):  

Years ended	Operating Leases
2019	$	414
2020	327
2021	308
2022 and thereafter	130
Total minimum lease payments	$	1,179