Subsequent Events (Details) - Subsequent Event - 2022 Term Loan	Jul. 26, 2022 USD ($)
Subsequent Event [Line Items]
Lenders option to invest in equity financing	$ 10,000,000
Net cash proceeds	75,000,000
Line of Credit
Subsequent Event [Line Items]
Aggregate principal amount (up to)	$ 250,000,000
Capped interest rate per annum	10.25%
Interest-only payment, period	42 months
Covenant revenue from sale, maintained market capitalization	$ 600,000,000
End term charges percentage	4.25%
Percentage of prepayment penalty, prepayment occurs prior to first anniversary of closing date	2.00%
Percentage of prepayment penalty, prepayment occurs on or after the first anniversary and prior to the second anniversary of the closing date	1.50%
Percentage of prepayment penalty, prepayment occurs occurs on or after the second anniversary and prior to the third anniversary of the closing date	0.75%
Line of Credit | Minimum
Subsequent Event [Line Items]
Qualified Cash percent	50.00%
Line of Credit | Maximum
Subsequent Event [Line Items]
Qualified Cash percent	90.00%
Line of Credit | The Wall Street Journal prime rate
Subsequent Event [Line Items]
Basis spread on variable rate	6.25%
Line of Credit | The Wall Street Journal prime rate | Minimum
Subsequent Event [Line Items]
Basis spread on variable rate	4.00%
Line of Credit | The Wall Street Journal prime rate | Maximum
Subsequent Event [Line Items]
Basis spread on variable rate	8.75%
Line of Credit | On Closing Date
Subsequent Event [Line Items]
Aggregate principal amount (up to)	$ 50,000,000
Line of Credit | Milestone 1 is achieved through December 15, 2022
Subsequent Event [Line Items]
Aggregate principal amount (up to)	50,000,000
Drawn down increments at company's election	5,000,000
Line of Credit | Milestone 2 is achieved through September 30, 2023
Subsequent Event [Line Items]
Aggregate principal amount (up to)	25,000,000
Drawn down increments at company's election	5,000,000
Line of Credit | Milestone 3 is achieved
Subsequent Event [Line Items]
Aggregate principal amount (up to)	75,000,000
Drawn down increments at company's election	5,000,000
Line of Credit | Subject to FDA approval of Zimura in GA
Subsequent Event [Line Items]
Aggregate principal amount (up to)	50,000,000
Drawn down increments at company's election	5,000,000
Revolving Credit Facility | Milestone 3 is achieved
Subsequent Event [Line Items]
Aggregate principal amount (up to)	50,000,000
Convertible Notes
Subsequent Event [Line Items]
Aggregate principal amount (up to)	$ 400,000,000