Balance Sheet Components (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued Liabilities [Abstract]
Accrued production costs	$ 22,534	$ 16,939
Accrued marketing expenses	21,371	19,072
Accrued income and sales tax	15,002	11,106
Accrued compensation	13,904	5,485
Accrued consulting	4,200	2,347
Accrued purchases	3,685	871
Accrued fixed assets	1,554	633
Accrued other	6,222	2,818
Total accrued liabilities	$ 88,472	$ 59,271