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CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY - Summary of Condensed Statements of Cash Flows of the Parent Company (Detail)
¥ 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/(used in) operating activities ¥ (25,991) $ (4,081) ¥ (261,514) ¥ (1,116,816)
Net cash (used in)/generated from investing activities (513,795) (80,623) 551,015 (115,483)
Net cash generated from/(used in) financing activities (463) (73) (13,876) 623,406
Effect of exchange rate changes on cash, cash equivalents and restricted cash (19,763) (3,101) (53,624) 11,390
Net increase in cash, cash equivalents and restricted cash (560,012) (87,878) 222,001 (597,503)
Cash, cash equivalents and restricted cash at beginning of the year 1,189,744 186,697 967,743 1,565,246
Cash, cash equivalents and restricted cash at the end of the year 629,732 $ 98,819 1,189,744 967,743
Parent Company [Member]        
Condensed Cash Flow Statements, Captions [Line Items]        
Net cash generated from/(used in) operating activities (23,226)   (29,257) 6,889
Net cash (used in)/generated from investing activities 29,919   6,372 (604,858)
Net cash generated from/(used in) financing activities 788   (16,176) 621,006
Effect of exchange rate changes on cash, cash equivalents and restricted cash (2,457)   (163) 323
Net increase in cash, cash equivalents and restricted cash 5,024   (39,224) 23,360
Cash, cash equivalents and restricted cash at beginning of the year 3,654   42,878 19,518
Cash, cash equivalents and restricted cash at the end of the year ¥ 8,678   ¥ 3,654 ¥ 42,878