Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Valuation And Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

Schedule II — Valuation and Qualifying Accounts

Years ended December 31, 2019, 2018 and 2017:

(in thousands)	Balance at Beginning of Period		Charged (Credited) to Costs and Expenses			Additions (Deductions) (1)			Balance at End of Period
Allowance for doubtful accounts:
Year ended December 31, 2019	$	3,096	$	598		$	(214	)	$	3,480
Year ended December 31, 2018		2,958		323			(185	)		3,096
Year ended December 31, 2017		2,925		63			(30	)		2,958
Valuation allowance for net deferred tax assets:
Year ended December 31, 2019	$	32,299	$	(19,633	)	$	—		$	12,666
Year ended December 31, 2018		32,443		(144	)		—			32,299
Year ended December 31, 2017		30,221		2,222			—			32,443

(1) Net write-offs and recoveries, including the effect of foreign currency translation.