Deferred Revenue, Income and Remaining Performance Obligations (Tables)

3 Months Ended

Mar. 31, 2018

Deferred Revenue Disclosure [Abstract]

Deferred Revenue and Income Summary

A summary of the balances as of March 31, 2018 and December 31, 2017 follows (in thousands):

	March 31,		December 31,
	2018		2017
Products and services not yet delivered	$	117	$	71
Arizona Commerce Authority grant	—		1,000
Deferred revenue and income	$	117	$	1,071