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Condensed Financial Information of the Parent Company - Schedule of Cash Flow Statement (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥)
Condensed Cash Flow Statements, Captions [Line Items] |  |  |  |
Net cash provided by (used in) operating activities | ¥ (215,522) | $ (30,958) | ¥ 1,884,956 | ¥ 3,409,451
Net cash used in investing activities | (828,219) | (118,966) | (1,447,013) | (2,450,800)
Net cash provided by (used in) financing activities | 1,749,512 | 251,301 | 530,097 | 2,132,933
Cash, cash equivalents and restricted cash-beginning of year | 1,616,164 |  |  |
Cash, cash equivalents and restricted cash-end of year | 2,324,542 | 333,900 | 1,616,164 |
Parent Company [Member] |  |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |  |
Net cash provided by (used in) operating activities | 8,474 | 1,217 | 12,111 | (12,178)
Net cash used in investing activities | 86,471 | 12,421 | (69,660) | (720,259)
Net cash provided by (used in) financing activities | (401,400) | (57,658) | (438,253) | 1,677,222
Effect of exchange rate changes on cash, cash equivalents and restricted cash | 2,544 | 366 | 22,098 | (13,447)
Net increase (decrease) in cash, cash equivalents and restricted cash | (303,911) | (43,654) | (473,704) | 931,338
Cash, cash equivalents and restricted cash-beginning of year | 461,054 | 66,226 | 934,758 | 3,420
Cash, cash equivalents and restricted cash-end of year | ¥ 157,143 | $ 22,572 | ¥ 461,054 | ¥ 934,758

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 + Details
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