PREPAID LAND LEASE PAYMENTS (Schedule of Estimated Annual Amortization Expenses) (Details) - Dec. 31, 2017
¥ in Thousands, $ in Thousands
CNY (¥)
USD ($)
PREPAID LAND LEASE PAYMENTS [Abstract]    
2018 ¥ 9,164 $ 1,408
2019 9,164 1,408
2020 9,164 1,408
2021 9,164 1,408
2022 ¥ 9,164 $ 1,408