SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | ||||
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Dec. 31, 2025
CNY (¥)
$ / ¥
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Dec. 31, 2025
USD ($)
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Dec. 31, 2024
CNY (¥)
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Dec. 31, 2023
CNY (¥)
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Dec. 31, 2025
USD ($)
$ / ¥
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| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |||||
| Convenience translation rate (USD to RMB) | $ / ¥ | 6.9931 | 6.9931 | |||
| Inventories cost | ¥ 29,187 | ¥ 29,644 | $ 4,173 | ||
| Inventory reserve | 7,799 | 6,169 | $ 1,115 | ||
| Impairment of long-lived assets | ¥ | ¥ 0 | ¥ 0 | ¥ 0 | ||
| Practical expedient available under ASC 606-10-50-14 to not to disclose information about its remaining performance obligations | true | true | true | true | |
| Advertising expenses | ¥ 102,729 | $ 14,690 | ¥ 133,528 | ¥ 120,794 | |
| Employee benefit expenses | 65,224 | 9,327 | 71,986 | 72,583 | |
| Interest incomes generated from interest-bearing bank deposits | ¥ 26,017 | $ 3,720 | ¥ 32,365 | ¥ 28,542 | |
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- References No definition available.
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Interest income derived from funds deposited with both domestic and foreign financial institutions including funds in money market and other accounts. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of valuation reserve for inventory. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Indicates (true false) whether practical expedient was elected not to adjust consideration for effect of financing component when transfer and customer payment for product or service occurs within one year or less. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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