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Prepaid Expenses and Other Current Assets (Details Textual) | 12 Months Ended
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Dec. 31, 2018
Prepaid Expenses and Other Current Assets (Textual) |
Lease, Description | The Company's subsidiary Beijing REIT leases headquarter offices of 658 square meters from March 1, 2011 to August 30, 2018, and prepaid rent expense to the landlord, which is amortized over the lease term.

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- Definition Description of lessee's operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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