Details of Selected Balance Sheet Accounts - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Accrual for loss contingency related to legal proceedings (Footnote 6)	$ 22,000	$ 22,000
Deferred rents	13,478	13,394
Facility restructuring accrual	2,724	3,006
Deferred income tax liability	4,851	4,734
Other long-term liabilities	1,162	1,231
Total	$ 44,215	$ 44,365