Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments And Contingencies Disclosure [Abstract]

Future Operating Lease Commitments

Future operating lease commitments are as follows by calendar year (in thousands):

	June 30, 2018
Remainder of 2018	$	581
2019		1,128
2020		527
2021		15
Total commitments	$	2,251