Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) Customer	Dec. 31, 2019 USD ($)
Summary of Significant Accounting Policies [Line Items]
Adjustment to accumulated deficit	$ (51,165)	$ (51,165)	$ (38,185)
Number of customers | Customer		23
Lease revenue	$ 0	$ 335
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Monthly rental fee period		1 month
Maximum
Summary of Significant Accounting Policies [Line Items]
Monthly rental fee period		3 months
Accounting Standards Update 2016-13
Summary of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true	true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020	Jan. 01, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]	false	false
Adjustment to accumulated deficit	$ 34	$ 34
Accounting Standards Update 2018-15
Summary of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true	true
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020	Jan. 01, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]	true	true