Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2017

Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS

Years Ended December 31, 2017, 2016, and 2015

Column A	Column B		Column C					Column D			Column E
			Additions (Reductions)
Description	Balance at Beginning of Period		Charged to Bad Debt Expense			Charged to Other Accounts		Deductions (1)			Balance at End of Period
	(In thousands)
Year ended December 31, 2017
Allowance for doubtful accounts	$	1,037	$	(235	)	$	—	$	(332	)	$	470
Year ended December 31, 2016
Allowance for doubtful accounts	$	226	$	916		$	—	$	(105	)	$	1,037
Year ended December 31, 2015
Allowance for doubtful accounts	$	185	$	107		$	—	$	(66	)	$	226

(1) Deductions represent the actual write-off of accounts receivable balances.