PREPAYMENTS AND OTHER CURRENT ASSETS (Schedule of Prepayments and Other Current Assets) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
PREPAYMENTS AND OTHER CURRENT ASSETS
Due from suppliers	¥ 25,622	$ 4,021	¥ 61,313
Loan receivables	169,272	26,562	67,367
Advances to employees	2,708	425	3,654
Receivables from disposal of medical equipment			7,330
Interest receivable			157
Dividend receivable			766
Deductible value-added tax	45,031	7,066	37,015
Tax refund	216	34	222
Capital contribution of contingently redeemable noncontrolling interest			31,415
Due from hospital	978	153	831
Deferred expenses	1,868	293
Others	26,177	4,109	15,501
Prepayments and other current assets, gross	271,872	42,663	225,571
Allowance for credit losses	(14,853)	(2,331)	(12,528)
Prepayments and other current assets	¥ 257,019	$ 40,332	¥ 213,043

The amount of capital contribution of contingently redeemable noncontrolling interest.

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Prepaid Expense And Other Assets, Gross Of Reserve, Current.

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Represents the amount of receivables from disposal of medical equipment.

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Reserve For Unrecoverable Deposits, Current.

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Carrying amount as of the balance sheet date of dividends declared but not received.

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Amounts due from an Entity employee, not to include stockholders or officers, which are usually due within 1 year (or 1 business cycle).

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount of other miscellaneous assets.

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Net amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Carrying amount as of the balance sheet date of value added taxes due either from customers arising from sales on credit terms, or as previously overpaid to tax authorities. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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