Restructuring Activities	9 Months Ended
Sep. 30, 2019
Restructuring And Related Activities [Abstract]
Restructuring Activities	5. Restructuring Activities In January 2018, the Company initiated an organizational restructuring plan (the “2018 Restructuring Plan”) designed to reduce operating expenses in response to declines in revenues. The 2018 Restructuring Plan included a headcount reduction of approximately 13% of the Company’s workforce, the closure of certain leased facilities and the consolidation of space in the Company’s San Francisco headquarters. Actions pursuant to the 2018 Restructuring Plan are substantially complete, and further costs associated with this plan are not expected to be material in future periods. The Company initiated certain other organizational restructuring plans during 2018 that also aimed to reduce operating expenses and primarily consisted of further headcount reductions. For the three and nine months ended September 30, 2019, the Company recorded zero and $229, respectively, of restructuring-related expenses in connection with the 2018 Restructuring Plan, as well as other organizational restructuring plans, in the accompanying condensed consolidated statements of comprehensive loss. For the three and nine months ended September 30, 2018, the Company recorded $161 and $1,107, respectively, of restructuring-related expenses in connection with these restructuring plans in the accompanying condensed consolidated statements of comprehensive loss.

Restructuring Activities

9 Months Ended

Sep. 30, 2019

Restructuring And Related Activities [Abstract]

5. Restructuring Activities

In January 2018, the Company initiated an organizational restructuring plan (the “2018 Restructuring Plan”) designed to reduce operating expenses in response to declines in revenues. The 2018 Restructuring Plan included a headcount reduction of approximately 13% of the Company’s workforce, the closure of certain leased facilities and the consolidation of space in the Company’s San Francisco headquarters. Actions pursuant to the 2018 Restructuring Plan are substantially complete, and further costs associated with this plan are not expected to be material in future periods. The Company initiated certain other organizational restructuring plans during 2018 that also aimed to reduce operating expenses and primarily consisted of further headcount reductions.

For the three and nine months ended September 30, 2019, the Company recorded zero and $229, respectively, of restructuring-related expenses in connection with the 2018 Restructuring Plan, as well as other organizational restructuring plans, in the accompanying condensed consolidated statements of comprehensive loss. For the three and nine months ended September 30, 2018, the Company recorded $161 and $1,107, respectively, of restructuring-related expenses in connection with these restructuring plans in the accompanying condensed consolidated statements of comprehensive loss.