Summary of Significant Accounting Policies - Summary of Impact of Adoption of Topic 606 on Consolidated Balance Sheet and Statement of Operations (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Current portion of deferred revenue	$ 7,000
Long-term portion of deferred revenue	12,022
Accumulated deficit	(205,326)		$ (122,828)
Balances Without the Adoption of Topic 606
Significant Accounting Policies [Line Items]
Current portion of deferred revenue	7,917		6,250
Long-term portion of deferred revenue	13,594		16,984
Accumulated deficit			$ (122,828)
ASC 606
Significant Accounting Policies [Line Items]
Current portion of deferred revenue		$ 7,000
Long-term portion of deferred revenue		14,022
Accumulated deficit		$ (120,616)
ASC 606 | Effect of Adoption Higher/ (Lower)
Significant Accounting Policies [Line Items]
Current portion of deferred revenue	(917)
Long-term portion of deferred revenue	(1,572)
Accumulated deficit	$ (2,489)