Liability Related to the Revenue Interest Purchase Agreement - Narrative (Details) - USD ($)				1 Months Ended	3 Months Ended		6 Months Ended
	May 16, 2021	Apr. 26, 2021	Jun. 26, 2019	Mar. 31, 2020	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Liability Related to the Revenue Interest Purchase Agreement
Restricted cash					$ 50,000,000	$ 0	$ 50,000,000	$ 0	$ 50,000,000		$ 0
Interest expense					14,266,000	11,144,000	28,328,000	19,269,000
Other Nonoperating Income (Expense)
Liability Related to the Revenue Interest Purchase Agreement
Interest expense						$ 8,000,000		$ 12,900,000
Revenue Interest Purchase Agreement (RIPA)
Liability Related to the Revenue Interest Purchase Agreement
Revenue interest liability					275,949,000		275,949,000		$ 257,039,000
Capitalized issuance costs							400,000
Interest expense					11,200,000		22,200,000
Oberland | Revenue Interest Purchase Agreement (RIPA)
Liability Related to the Revenue Interest Purchase Agreement
Percentage of revenue interests payment on which agreement terminates, prior to the third anniversary of the closing date, if put option is exercised			175.00%
Percentage of revenue interests payment on which agreement terminates, after the third anniversary of the closing date, if put option is exercised			195.00%
Proceeds from Revenue Interest Purchase Agreement		$ 50,000,000		$ 25,000,000.0
Revenue interest rate which will take effect if annual net sales equals or exceeds the sales threshold by December 31, 2021			2.50%
Initial revenue interest rate			7.50%
Percentage of revenue interests payment on which agreement terminates			195.00%
Percentage of invested capital received by December 31, 2024, to qualify for second reduced revenue interest rate			100.00%
Capitalized issuance costs			$ 600,000
Minimum amount of annual net sales to qualify for reduced revenue interest rate by December 31, 2021			350,000,000
Maximum amount of US net sales to qualify for the Covered Territory expansion to include worldwide sales by December 31, 2021			$ 350,000,000
Repayment amount expected to pay in next twelve months					$ 22,000,000		$ 22,000,000
Effective annual imputed interest rate (as a percent)							16.60%
Consecutive number of months sales must be at or above milestone amount			6 months
Percentage of increase in royalty rate upon drawdown of third payment			33.33%
Gross proceeds from revenue interest liability			$ 125,000,000.0
Total amount of subsequent installment, subject to RIPA terms and conditions			75,000,000.0
Amount of subsequent installment, subject to regulatory approval			25,000,000.0
Amount of subsequent installment, subject to achievement of sales threshold			50,000,000.0
Milestone amount for worldwide sales to receive the third payment			$ 100,000,000.0
Revenue interest rate if annual net sales equal or exceed the Sales Threshold and if the Purchasers receive 100% of their invested capital by December 31, 2024			0.40%
Percentage of revenue interests payment on which agreement terminates, if prior to the anniversary of the closing date, if put option is exercised			120.00%
Oberland | Revenue Interest Purchase Agreement (RIPA) | Net Sales Less Than $250 Million
Liability Related to the Revenue Interest Purchase Agreement
Initial revenue interest rate			10.00%
Hypothetical sales generated amount			$ 100,000,000
Minimum amount of annual net sales to qualify for reduced revenue interest rate by December 31, 2021			250,000,000
Hypothetical repayment obligation			$ 10,000,000
Oberland | Revenue Interest Purchase Agreement (RIPA) | Net Sales Greater Than $250 Million But Less Than $350 Million
Liability Related to the Revenue Interest Purchase Agreement
Revenue interest rate which will take effect if annual net sales equals or exceeds the sales threshold by December 31, 2021			3.30%
Hypothetical sales generated amount			$ 100,000,000
Minimum amount of annual net sales to qualify for reduced revenue interest rate by December 31, 2021			250,000,000
Hypothetical repayment obligation			3,300,000
Oberland | Revenue Interest Purchase Agreement (RIPA) | Net Sales Greater Than $350 Million
Liability Related to the Revenue Interest Purchase Agreement
Hypothetical sales generated amount			100,000,000
Minimum amount of annual net sales to qualify for reduced revenue interest rate by December 31, 2021			350,000,000
Hypothetical repayment obligation			$ 3,300,000
Oberland | RIPA Amendment
Liability Related to the Revenue Interest Purchase Agreement
Percentage of revenue interests payment on which agreement terminates, prior to the third anniversary of the closing date, if put option is exercised		200.00%	200.00%
Percentage of revenue interests payment on which agreement terminates, after the third anniversary of the closing date, if put option is exercised		225.00%
Revenue interest rate which will take effect if annual net sales equals or exceeds the sales threshold by December 31, 2021		3.33%
Initial revenue interest rate		10.00%
Minimum amount of annual net sales to qualify for reduced revenue interest rate by December 31, 2024, contingent on 100% invested capital received		$ 350,000,000
Percentage of invested capital received by December 31, 2024, to qualify for second reduced revenue interest rate		100.00%
Percentage of revenue interest payments to qualify for third payment applicable percentage		100.00%
Percentage of cumulative purchaser payments		100.00%
Oberland | RIPA Amendment To The Security Agreement And Waiver
Liability Related to the Revenue Interest Purchase Agreement
Specified net revenue	$ 15,000,000
Company deposit value in blocked account	$ 50,000,000
Restricted cash										$ 50,000,000