XML 82 R57.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Debt (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Nov. 16, 2021 | Oct. 16, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Debt |  |  |  |
Proceeds from credit facility |  |  | $ 24,984 | $ 24,622
Loan and Security Agreement |  |  |  |
Debt |  |  |  |
Line of credit maximum |  | $ 50,000 |  |
Proceeds from credit facility |  | $ 25,000 | 25,000 |
Remaining borrowing capacity |  |  | $ 25,000 |
Variable rate (as a percent) | 7.85% |  |  |
Final payment fee (as a percent) | 4.00% |  |  |
Percentage of dollar value of company's consolidated cash | 100.00% |  |  |
Amount of cash required in a lender's account as a percentage of outstanding obligation (as a percent) | 105.00% |  |  |
Loan and Security Agreement | Financing receivable, lower range of payment terms |  |  |  |
Debt |  |  |  |
Prepayment penalty (as a percent) | 2.00% |  |  |
Loan and Security Agreement | Financing receivable, upper range of payment terms |  |  |  |
Debt |  |  |  |
Prepayment penalty (as a percent) | 3.00% |  |  |
Loan and Security Agreement | Wall Street Journal prime rate |  |  |  |
Debt |  |  |  |
Variable rate (as a percent) | 4.60% |  |  |

X
- Definition Represents the final payment fee, as a percent of the aggregate advances on the debt. + References No definition available. + Details
Name: | srrk_DebtInstrumentFinalPaymentFee
Namespace Prefix: | srrk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dollar value of company's consolidated cash as a percent, as required by the agreement. + References No definition available. + Details
Name: | srrk_PercentageOfDollarValueOfConsolidatedCash
Namespace Prefix: | srrk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash required in a lender's account as a percentage of outstanding obligation requirement as per the agreement. + References No definition available. + Details
Name: | srrk_PercentageOfOutstandingObligation
Namespace Prefix: | srrk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Prepayment penalty as a percent + References No definition available. + Details
Name: | srrk_PrepaymentPenaltyPercent
Namespace Prefix: | srrk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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=123570139&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=srrk_LoanAndSecurityAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |