Balance Sheet Components (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accrued Liabilities [Abstract]
Accrued compensation	$ 9,161	$ 13,904
Accrued marketing expenses	6,261	21,371
Accrued production costs	6,145	22,534
Accrued fixed assets	2,919	1,554
Accrued consulting	2,582	4,200
Accrued other	7,308	24,909
Total accrued liabilities	$ 34,376	$ 88,472