Note Payable - Warrants (Details) - USD ($) $ / shares in Units, $ in Millions	Jun. 08, 2020	Jun. 30, 2020	Dec. 31, 2019
Class of Warrant or Right [Line Items]
Common stock, par value		$ 0.01	$ 0.01
Loan and Security Agreement, Term Loans
Class of Warrant or Right [Line Items]
Number of warrants (as a percent)	1.00%
Number of warrants issued (in shares)	5,311
Warrant exercise period	7 years
Warrants exercise price (in dollars per share)	$ 18.83
Warrant registration period	60 days
Loan and Security Agreement, Term Loans | Maximum
Class of Warrant or Right [Line Items]
Warrant registration period	180 days
Loan and Security Agreement, Term Loan, First/Initial Tranche
Class of Warrant or Right [Line Items]
Fair value of warrants	$ 0.1