Commitments and Contingencies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2018

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Summary of Future Minimum Payments Due Under Operating Leases

The following table summarizes the future minimum payments due under the operating leases as of March 31, 2018 (in thousands):

Years Ending December 31,
2018 (remainder)	$	658
2019		1,323
2020		1,016
2021		957
2022		1,076
Thereafter		2,200
	$	7,230

The following table summarizes the future minimum payments due under the operating leases as of December 31, 2017 (in thousands):

Year Ending December 31,
2018	$	820
2019		808
2020		499
2021		—
	$	2,127