Balance Sheet Components (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Changes in the allowance for doubtful accounts
End of the period	$ 1,712	$ 2,153
Remote controls and digital video product categories
Changes in the allowance for doubtful accounts
Beginning of the period	2,153	2,472	4,086
Expense (reversal), net	656	(107)	(592)
Write-offs, net of recoveries	(1,097)	(212)	(1,022)
End of the period	$ 1,712	$ 2,153	$ 2,472