Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	[1]	$ 1,254	$ 1,050		$ 1,049
Other	[1]	0	0		0
Additions	[1]	21	50		99
Deductions	[1]	(196)	154		(98)
Balance at end of year	[1]	1,079	1,254		1,050
Allowance for sales returns
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	[1]	0	14,321		10,602
Other	[1]	0	(14,321)	[2]	0
Additions	[1]	0	0		26,419
Deductions	[1]	0	0		(22,700)
Balance at end of year	[1]	0	0		14,321
Allowance for price protection
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	[1]	0	3,245		4,185
Other	[1]	0	(3,245)	[2]	0
Additions	[1]	0	0		7,149
Deductions	[1]	0	0		(8,089)
Balance at end of year	[1]	$ 0	$ 0		$ 3,245

[1] Upon Arlo's Distribution on December 31, 2018, Arlo’s historical financial results for periods prior to its Distribution were reflected in our consolidated financial statements as discontinued operations and these schedules represent the results from continuing operations. Refer to Note 3. Discontinued Operations, for additional information on Arlo's Distribution.

[2] Upon adoption of ASC 606, allowances for sales returns and price protection were reclassified to current liabilities as these reserve balances are considered refund liabilities.