The Company and Summary of Significant Accounting Policies - Adoption of New Accounting Standards Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 144,746	$ 149,442	$ 0
Operating lease, liability	165,011
Adjustment to property and equipment due to adoption of new accounting guidance	(127,183)	(104,961)	(200,358)
Other non-current liabilities	$ (120,713)	(105,264)	(218,879)
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		149,442
Operating lease, liability		162,900
Adjustment to property and equipment due to adoption of new accounting guidance		95,397
Other non-current liabilities		$ 113,615	109,800
Build-to-suit facility | ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to property and equipment due to adoption of new accounting guidance			$ 95,400