Accounts Receivable, Net (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Summary of Accounts Receivable

The following table presents the components of accounts receivable:

	March 31,			December 31,
	2018			2017
	(In thousands)
	(unaudited)
Gross accounts receivable	$	1,910		$	1,609
Allowance for uncollectible accounts		(73	)		(73	)
Total accounts receivable, net	$	1,837		$	1,536