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Condensed Financial Information of the Company - Summary of Condensed Statements of Cash Flows (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Condensed Cash Flow Statements, Captions [Line Items]        
Net cash generated from operating activities ¥ (582,877) $ (91,465) ¥ 55,243 ¥ 199,828
Net cash generated from financing activities 584,319 91,692 23,395 2,236
Net increase in cash and cash equivalents 49,345 7,744 19,088 130,830
Cash, cash equivalents and restricted cash at the beginning of the period 249,720 39,186 230,632 99,802
Cash, cash equivalents and restricted cash at the end of the period 299,065 46,930 249,720 230,632
Parent | Reportable legal entities        
Condensed Cash Flow Statements, Captions [Line Items]        
Net cash generated from operating activities (554,427) (87,001) 97 39
Net cash generated from financing activities 557,389 87,466    
Net increase in cash and cash equivalents 2,962 465 97 39
Cash, cash equivalents and restricted cash at the beginning of the period 136 21 39  
Cash, cash equivalents and restricted cash at the end of the period ¥ 3,098 $ 486 ¥ 136 ¥ 39