Employee Benefit Plans - NETGEAR Schedule of Stock Option Activity (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	6,040
Exercised (in shares) | shares	(247)
Forfeited/ cancelled (in shares) | shares	(2,359)
Expired (in shares) | shares	0
Ending balance (in shares) | shares	3,434
Number of shares, Vested and expected to vest (in shares) | shares	3,434
Number of shares, Exercisable Options (in shares) | shares	2,998
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 11.56
Exercised (in dollars per share) | $ / shares	6.98
Forfeited / cancelled (in dollars per share) | $ / shares	14.72
Expired (in dollars per share) | $ / shares	0
Ending balance (in dollars per share) | $ / shares	9.72
Weighted average exercise price, Vested and expected to vest (in dollars per share) | $ / shares	9.72
Weighted average exercise price, Exercisable Options (in dollars per share) | $ / shares	$ 9.10
Weighted average remaining term (in years)	4 years 9 months 18 days
Outstanding shares, Aggregate intrinsic value | $	$ 1,595
Vested and expected to vest, Weighted average remaining contractual term (in years)	4 years 9 months 18 days
Vested and expected to vest, Aggregate intrinsic value | $	$ 1,595
Exercisable Options, Weighted average remaining contractual term (in years)	4 years 5 months 8 days
Exercisable Options, Aggregate intrinsic value | $	$ 1,569
NETGEAR
Number of Shares
Beginning balance (in shares) | shares	205
Exercised (in shares) | shares	(142)
Forfeited/ cancelled (in shares) | shares	(47)
Expired (in shares) | shares	0
Ending balance (in shares) | shares	16
Number of shares, Vested and expected to vest (in shares) | shares	16
Number of shares, Exercisable Options (in shares) | shares	12
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 25.94
Exercised (in dollars per share) | $ / shares	22.74
Forfeited / cancelled (in dollars per share) | $ / shares	36.73
Expired (in dollars per share) | $ / shares	0
Ending balance (in dollars per share) | $ / shares	22.49
Weighted average exercise price, Vested and expected to vest (in dollars per share) | $ / shares	22.49
Weighted average exercise price, Exercisable Options (in dollars per share) | $ / shares	$ 20.11
Weighted average remaining term (in years)	3 years
Outstanding shares, Aggregate intrinsic value | $	$ 288
Vested and expected to vest, Weighted average remaining contractual term (in years)	3 years
Vested and expected to vest, Aggregate intrinsic value | $	$ 288
Exercisable Options, Weighted average remaining contractual term (in years)	1 year 7 months 28 days
Exercisable Options, Aggregate intrinsic value | $	$ 241