Debt instrument compound interest rate.

No definition available.

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- Definition

Debt instrument exit fee percentage.

+ References

No definition available.

+ Details

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- Definition

Debt instrument number of tranches.

+ References

No definition available.

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- Definition

Debt instrument variable interest rate.

+ References

No definition available.

+ Details

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- Definition

Extinguishment of debt exit fee.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

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Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

+ Details

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- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 835
-SubTopic 30
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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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-SubTopic 10
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-Paragraph 28
-Subparagraph (b)
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Balance Type:	credit
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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Debt - Additional Information (Details)			12 Months Ended
Debt - Additional Information (Details)	Jan. 09, 2020 USD ($) $ / shares shares	Feb. 28, 2019 USD ($) Tranche	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Aug. 21, 2020 shares
Debt Instrument [Line Items]
Loss on debt extinguishment			$ (22,639,000)
Purchase of common stock upon exercise of warrants \| shares					410,239
Fair value of warrants			3,109,000
OrbiMed Royalty & Credit Opportunities, LP.
Debt Instrument [Line Items]
Purchase of common stock upon exercise of warrants \| shares	410,239
Warrants initial exercise price \| $ / shares	$ 16.10
Fair value of warrants	$ 2,359,000		3,109,000
OrbiMed Royalty & Credit Opportunities, LP. \| Warrants
Debt Instrument [Line Items]
Unamortized debt issuance costs			2,097,000
Multi-draw Loan Agreement \| CRG Servicing LLC
Debt Instrument [Line Items]
Aggregate principal amount		$ 200,000,000
Maturity date		Mar. 31, 2025
Fixed interest rate		12.00%
Number of tranches \| Tranche		3
Percentage of interest payable in cash		7.50%
Percentage of Compounded interest rate		4.50%
Long-term Debt, Gross				$ 100,000,000
Cash proceeds received				94,816,000
Amortized issuance costs				$ 5,184,000
Term of loan				6 years
Unamortized debt issuance costs				$ 4,592,000
Extinguishment of loan, amount	120,893,000
Loss on debt extinguishment	22,639,000
Exit fee	18,047,000
Write-off of the remaining unamortized debt issuance costs	4,592,000
Credit Agreement \| CRG Servicing LLC
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 102,538,000
Credit Agreement \| OrbiMed Royalty & Credit Opportunities, LP.
Debt Instrument [Line Items]
Aggregate principal amount	$ 200,000,000
Maturity date	Jan. 31, 2026
Long-term Debt, Gross			200,000,000
Cash proceeds received	$ 73,313,000
Amortized issuance costs	$ 5,804,000
Term of loan	6 years
Variable interest rate	2.00%
Basis spread on variable rate	11.00%
Debt instrument exit fee percentage	7.00%
Fair value of loan			$ 245,700,000