Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

Schedule II Valuation and Qualifying Accounts

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

	Balance at Beginning of Period		Charged to Costs and Expenses			Deductions/ Write-offs (Recoveries)			Balance at End of Period
	(In thousands)
Year ended December 31, 2016
Allowance for doubtful accounts	$	15	$	2		$	17		$	—
Year ended December 31, 2015
Allowance for doubtful accounts	$	28	$	(6	)	$	7		$	15
Year ended December 31, 2014
Allowance for doubtful accounts	$	9	$	16		$	(3	)	$	28