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DEPOSITS FOR NON-CURRENT ASSETS (Schedule of Deposits for Non-Current Assets) (Narrative) (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Valuation and Qualifying Accounts Disclosure [Line Items]        
Assets, Noncurrent $ 576,712 ¥ 4,014,958 ¥ 3,356,702  
Capital Addition Purchase Commitments [Member]        
Valuation and Qualifying Accounts Disclosure [Line Items]        
Commitments to purchase certain medical equipment 89,429 622,584 660,758  
Assets, Noncurrent   0 13,800  
Debt Instrument, Face Amount   0 10,731  
Impairment loss on deposit assets $ 8,963 ¥ 62,400 ¥ 0 ¥ 0