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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Accounts Receivable and Allowance for Uncollectible Accounts Receivable) (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts receivable and allowance for uncollectible accounts receivable
Allowance for doubtful accounts	¥ 0	¥ 0

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- References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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