Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Valuation and Qualifying Accounts

TERADYNE, INC.

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

Column A	Column B		Column C		Column D		Column E		Column F
Description	Balance at Beginning of Period		Additions Charged to Cost and Expenses		Other		Deductions		Balance at End of Period
	(in thousands)
Valuation reserve deducted in the balance sheet from the asset to which it applies:
Accounts receivable:
2019 Allowance for doubtful account	$	1,673	$	87	$	28	$	52	$	1,736
2018 Allowance for doubtful account	$	2,219	$	—	$	20	$	566	$	1,673
2017 Allowance for doubtful accounts	$	2,356	$	4	$	—	$	141	$	2,219

Column A	Column B		Column C		Column D			Column E		Column F
Description	Balance at Beginning of Period		Additions Charged to Cost and Expenses		Other			Deductions		Balance at End of Period
	(in thousands)
Valuation reserve deducted in the balance sheet from the asset to which it applies:
Inventory:
2019 Inventory reserve	$	100,779	$	15,244	$	(85	)	$	12,382	$	103,556
2018 Inventory reserve	$	102,896	$	11,242	$	368		$	13,727	$	100,779
2017 Inventory reserve	$	116,016	$	8,844	$	(126	)	$	21,838	$	102,896

Column A	Column B		Column C		Column D		Column E		Column F
Description	Balance at Beginning of Period		Additions Charged to Cost and Expenses		Other		Deductions		Balance at End of Period
	(in thousands)
Valuation reserve deducted in the balance sheet from the asset to which it applies:
Deferred taxes:
2019 Valuation allowance	$	69,852	$	7,325	$	—	$	—	$	77,177
2018 Valuation allowance	$	63,919	$	6,333	$	—	$	400	$	69,852
2017 Valuation allowance	$	48,369	$	15,571	$	—	$	21	$	63,919