ACCOUNTS RECEIVABLE (Schedule of Accounts Receivable) (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
|
Dec. 31, 2017
CNY (¥)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
CNY (¥)
|
Dec. 31, 2015
CNY (¥)
|
Dec. 31, 2017
USD ($)
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Accounts receivable | ¥ 144,921 | ¥ 189,646 | $ 22,274 | ||
| Allowance for doubtful accounts | (12,969) | (57) | (1,993) | ||
| Accounts receivable, net | 131,952 | 189,589 | $ 20,281 | ||
| The movement in the allowance for doubtful accounts were as follows: | |||||
| Balance at the beginning of the year | 57 | $ 9 | 1,781 | ¥ 2,281 | |
| Acquisition of CHS | 0 | 0 | 0 | 167 | |
| Provisions for the year | 14,840 | 2,281 | 1,066 | 2,925 | |
| Reversal of provisions from prior periods due to subsequent cash collection during the year | 0 | 0 | 0 | (749) | |
| Amounts written off during the year | (1,928) | (297) | (2,790) | (2,843) | |
| Balance at the end of the year | ¥ 12,969 | $ 1,993 | ¥ 57 | ¥ 1,781 | |