Borrowing - Narrative (Details) - Term Loan - USD ($)	Jun. 30, 2021	Oct. 09, 2020	Jul. 31, 2021	May 16, 2018
Debt Instrument [Line Items]
Term loan face amount				$ 50,000,000.0
Interest-only payment extension term (in months)		12 months
Closing fee (percent)				1.00%
Closing fee		$ 100,000		$ 500,000
Final fee due upon maturity, acceleration, prepayment, or termination (percent)	4.95%
Additional default interest rate	4.00%
Subsequent event
Debt Instrument [Line Items]
Closing fee			$ 100,000
Prior to first anniversary of closing date
Debt Instrument [Line Items]
Prepayment premium (as a percent)	3.00%
After first anniversary through second anniversary of closing date
Debt Instrument [Line Items]
Prepayment premium (as a percent)	2.00%
After second anniversary to maturity date
Debt Instrument [Line Items]
Prepayment premium (as a percent)	1.00%