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CONSOLIDATED BALANCE SHEETS (Parenthetical) ¥ in Thousands, $ in Thousands | Dec. 31, 2018 CNY (¥) shares | Dec. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2017 CNY (¥) shares
--- | --- | --- | ---
Accounts receivable, allowance | ¥ 3,585 | $ 521 | ¥ 12,969
Accounts receivable, due from related party | 5,099 | 742 | 11,425
Prepayments and other current assets | 14,798 | 2,152 | 4,798
Prepayments and other current assets, due from related party | 15,572 | 2,264 | 13,879
Deposits for non-current assets | 30,860 | 4,488 | 30,860
Long-term Debt and Other Borrowings, Related Parties, Current |  |  | 162,297
Accrued expenses and other liabilities, interest payable to related party |  |  | 5,523
Long-term bank and other borrowings, non-current portion, loan from related party |  |  | ¥ 280,459
Treasury stock, shares | 12,175,155 | 12,175,155 | 12,261,555
Current liabilites | ¥ 870,265 | $ 126,573 | ¥ 1,108,171
Non-current liabilities | (1,441,248) | (209,619) | (1,342,301)
Accrued Expenses and Other Liabilities Related Party Current | 15,985 | 2,324 |
VIE and Subsidiaries |  |  |
Current liabilites | 46,013 | 6,692 | 77,862
Non-current liabilities | ¥ 454,424 | $ 66,093 | ¥ 404,597
Common Class A [Member] |  |  |
Ordinary shares, par value per share | $ / shares |  | $ 0.0001 |
Ordinary shares, shares authorized | 500,000,000 | 500,000,000 | 500,000,000
Ordinary shares, shares issued | 142,353,532 | 142,353,532 | 142,353,532
Ordinary shares, shares outstanding | 84,390,429 | 84,390,429 | 130,091,977
Common Class B [Member] |  |  |
Ordinary shares, par value per share | $ / shares |  | $ 0.0001 |
Ordinary shares, shares authorized | 45,787,948 | 45,787,948 | 45,787,948
Ordinary shares, shares issued | 45,787,948 | 45,787,948 | 0
Ordinary shares, shares outstanding | 45,787,948 | 45,787,948 | 0

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