Certain Balance Sheet Components Certain Balance Sheet Components - Other non-current Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Deferred revenue, long-term		$ 4,652	$ 3,093
Pension, long-term		4,237	0
Deferred rent, long-term		4,226	6,340
Accrued TVN VDP, long-term (1)	[1]	3,053
Other		2,263	294
Total		$ 18,431	$ 9,727

[1] See Note 11, “Restructuring and related charges-TVN VDP,” for additional information on the Company’s TVN VDP liabilities.