XML 74 R48.htm IDEA: XBRL DOCUMENT
v3.23.1

Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Leases [Abstract] |
Summary of Operating Leases |
|  | Years ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | RMB |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |
Operating cash flows from operating leases |  |  | 72,698 |  |  |  | 74,038 |  |  |  | 22,608 |
Noncash changes in right-of-use assets from new lease obligations and lease modification: |  |  |  |  |  |  |  |  |
Operating leases |  |  | (24,720 | ) |  |  | 4,339 |  |  |  | 380 |
Weighted average remaining lease term |  |  |  |  |  |  |  |  |
Operating leases |  | 12.0 years |  |  | 12.3 years |  |  | 12.6 years |
Weighted average discount rate |  |  |  |  |  |  |  |  |
Operating leases |  |  | 7.4 | % |  |  | 7.6 | % |  |  | 6.8 | %
Summary of Maturity Analysis of Annual Undiscounted Cash Flows for Lease Liabilities | The following is a maturity analysis of the annual undiscounted cash flows for lease liabilities as of December 31, 2022:
|  | RMB |
2023 |  |  | 32,758 |
2024 |  |  | 33,616 |
2025 |  |  | 34,498 |
2026 |  |  | 35,533 |
2027 |  |  | 36,599 |
2028 and thereafter |  |  | 316,527 |
Total future lease payments |  |  | 489,531 |
Less: Imputed interest |  |  | 155,622 |
Total lease liability balance |  |  | 333,909 |

X
- Definition Lessee, schedule of operating lease. + References No definition available. + Details
Name: | stg_LesseeScheduleOfOperatingLeaseTableTextBlock
Namespace Prefix: | stg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration