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Repayments of Principal Amounts of Long-Term Borrowings, Including Bonds Payable, Bank and Other Borrowings (Detail) - Dec. 31, 2017
¥ in Thousands, $ in Thousands
USD ($)
CNY (¥)
Debt Disclosure [Abstract]    
2018 $ 18,488 ¥ 120,289
2019 11,625 75,638
2020 306,281 1,992,760
2021 5,994 39,000
2022 thereafter $ 6,225 ¥ 40,500