Balance Sheet Components - Accrued and Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Balance Sheet Components [Abstract]
Accrued royalties	$ 1,892		$ 3,959
Accrued employee compensation and benefits	1,135		894
Accrued Geek Points	478	[1]	561	[1]
Other accrued liabilities	558		1,247
Accrued and other liabilities	$ 4,063		$ 6,661

[1] Accrued Geek Points represents the cost of anticipated future redemptions for awards earned as of the end of the respective periods.