ALLOWANCES FOR DOUBTFUL ACCOUNTS (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Allowance for Doubtful Accounts

The movement in the allowance for doubtful accounts for the years ended December 31, 2017, 2016 and 2015 is summarized as follows:

	2017			2016			2015
	(In thousands)
Balance, beginning of year	$	801		$	622		$	703
Provision		1,345			190			—
Write-offs, net of recoveries		(2,146	)		(11	)		(81	)
Balance, end of year	$	—		$	801		$	622