Revenue (Tables)

9 Months Ended

Sep. 30, 2019

Revenue

Schedule of amounts recorded in accrued liabilities

	September 30,		December 31,
	2019		2018
Contract liabilities	$	(272)	$	(476)
During the three and nine months ended September 30, 2019, the Company recognized $0.1 million and $0.4 million, respectively, of revenue that was included in the contract balances as of December 31, 2018.