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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) ¥ in Thousands, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 02, 2017 CNY (¥) | Jan. 02, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Noon buying rate |  |  | 6.5063 | 6.5063 |  |
Interest and other costs relating to construction capitalized |  |  | ¥ 38,533 | $ 5,922 | ¥ 1,956 | ¥ 1,376
Impairment on long-lived assets |  |  | 28,600 | 4,396 | 61,124 | 23,125
Lease and management services revenue |  |  | 245,434 | 37,723 | 378,723 | 525,208
Management services revenue |  |  | 29,549 | 4,542 | 27,707 | 21,596
Revenue from technical services |  |  | 9,779 | 1,503 | 17,543 | 21,449
Financing lease income |  |  | 7,554 | 1,161 | 14,100 | 23,259
Medical equipment sales |  |  | 7,005 | 1,077 | 5,456 | 6,234
Taxes and related surcharges |  |  | 2,439 | 375 | 5,854 | 22,237
Advertising expenses |  |  | ¥ 2,910 | $ 447 | ¥ 7,378 | ¥ 15,205
Accounting Standards Update 2016-09 [Member] |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Cumulative Effect on Retained Earnings, Net of Tax | ¥ 3,123 | $ 480 |  |  |  |
Minimum [Member] |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Leases and management service arrangements, term |  |  | 5 years | 5 years |  |
Maximum [Member] |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Leases and management service arrangements, term |  |  | 20 years | 20 years |  |
Prepaid Land Lease Rights [Member] |  |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Amortization period |  |  | 50 years | 50 years |  |

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