Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Summary of Operating Leases

The following is a schedule by years of future minimum rental payments required under operating leases that have initial or remaining noncancelable lease terms in excess of one year as of December 31, 2017:

Year ending December 31,
2018	$	9,000
2019		5,000
2020		3,000
2021		500
	$	17,500