Subsequent Events (Narrative) (Details)	1 Months Ended
Jan. 31, 2018
Subsequent Event, Date	Jan. 23, 2018
Subsequent Event, Description	On January 23, 2018, the Company entered into a 132-month lease to rent approximately 162,000 square feet for a new Company headquarters in San Jose, California. The lease term begins on January 1, 2019 or such earlier date on which the Company first commences to conduct business on the premises. The Company has the option to extend the lease for one additional five-year term, on substantially the same terms and conditions as the prior term but with the base rent rate adjusted to fair market value at that time. Base rent is approximately $512,000 per month for the first 12 months of the lease, and the rate increases 3% on each anniversary of the lease commencement date. The Company is entitled to full rent abatement during the first 10 months of the lease term and 50% rent abatement during the next four months of the lease term. The Company is also responsible for paying its proportionate share of building and common area operating expenses, property taxes and insurance costs. The Company is entitled to a one-time tenant improvement allowance of approximately $13.3 million, the full amount of which must be used within 12 months of the lease commencement date. The Company has procured a standby letter of credit in the amount of $8.1 million (Footnote 5) for the benefit of the landlord, which may be drawn down in the event the Company defaults in the payment of its obligations under the lease.

Subsequent Events (Narrative) (Details)

1 Months Ended

Jan. 31, 2018

Jan. 23, 2018

On January 23, 2018, the Company entered into a 132-month lease to rent approximately 162,000 square feet for a new Company headquarters in San Jose, California. The lease term begins on January 1, 2019 or such earlier date on which the Company first commences to conduct business on the premises. The Company has the option to extend the lease for one additional five-year term, on substantially the same terms and conditions as the prior term but with the base rent rate adjusted to fair market value at that time.

Base rent is approximately $512,000 per month for the first 12 months of the lease, and the rate increases 3% on each anniversary of the lease commencement date. The Company is entitled to full rent abatement during the first 10 months of the lease term and 50% rent abatement during the next four months of the lease term. The Company is also responsible for paying its proportionate share of building and common area operating expenses, property taxes and insurance costs.

The Company is entitled to a one-time tenant improvement allowance of approximately $13.3 million, the full amount of which must be used within 12 months of the lease commencement date.

The Company has procured a standby letter of credit in the amount of $8.1 million (Footnote 5) for the benefit of the landlord, which may be drawn down in the event the Company defaults in the payment of its obligations under the lease.