SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Tables)

12 Months Ended

Dec. 31, 2015

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

		Years Ended December 31,
		2015		2014			2013
				(in thousands)
Allowance for bad debts:
Beginning balance	$	490		$	294		$	268
Additions		379			354			92
Write-offs		(264	)		(158	)		(66	)
Ending balance	$	605		$	490		$	294
Allowance for customer credits:
Beginning balance	$	280		$	111		$	158
Additions		803			1,037			511
Write-offs		(644	)		(868	)		(558	)
Ending balance	$	439		$	280		$	111
Tax valuation allowance:
Beginning balance	$	6,015		$	6,356		$	43,883
Charged (credited) to tax expense		(588	)		(341	)		(37,527	)
Ending balance	$	5,427		$	6,015		$	6,356