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Loans Payable (Details Textual) $ in Thousands, ¥ in Millions					1 Months Ended	6 Months Ended	12 Months Ended
	Aug. 06, 2017 USD ($)	Aug. 06, 2017 CNY (¥)	Aug. 05, 2016 USD ($)	Aug. 05, 2016 CNY (¥)	Jul. 31, 2013 CNY (¥)	Jun. 30, 2018 USD ($)	Dec. 31, 2017	Jun. 30, 2018 CNY (¥)	Aug. 06, 2017 CNY (¥)	Aug. 06, 2016 USD ($)	Aug. 06, 2016 CNY (¥)	Jul. 31, 2013 USD ($)	Jul. 31, 2013 CNY (¥)
Loans Payable (Textual)
Percentage of service fee on loan					0.10%
Long term debt maturities repayments of principal in fourth year	$ 16,270								¥ 100
Long term debt maturities repayments of principal in fifth year	12,520								¥ 77
Interest rate						9.00%		9.00%
Interest rate terms						The Company applied for a lower interest rate from the lender in January 2017, and the lender tentatively agreed to lower the interest rate to 9% in December 2017 subject to the approval from its headquarters. The Company plans to repay the interest once the lender’s internal approval procedure, which is still pending, is officially completed.
Remaining debt amount	$ 45,540	¥ 280	$ 34,680	¥ 230
Term of loan, description						The term of this loan is for 60 months from July 31, 2013 to July 30, 2018.
Interest payable for loan						$ 11,900
Description of remaining loan balance						The Company negotiated with the lender again for further extending the remaining loan balance of RMB 230 million ($34.68 million), RMB 100 million ($16.27 million), and RMB 77 million ($12.52 million) (which included investment from Xi'an TCH of RMB 75 million and was netted off with the entrusted loan payable of the HYREF Fund in the balance sheet). The lender has tentatively agreed to extend the remaining loan balance for another two years until August 2019 with an adjusted annual interest rate of 9%, subject to the final approval from its headquarters.	The Company negotiated with the lender again for further extending the remaining loan balance of RMB 230 million ($34.68 million), RMB 100 million ($16.27 million), and RMB 77 million ($12.52 million) (which included investment from Xi'an TCH of RMB 75 million and was netted off with the entrusted loan payable of the HYREF Fund in the balance sheet). The lender has tentatively agreed to extend the remaining loan balance for another two years until August 2019 with an adjusted annual interest rate of 9%, subject to the final approval from its headquarters.
Xi'an TCH [Member]
Loans Payable (Textual)
Capitalized interest to construction in progress | ¥					¥ 27
Entrusted loan [Member]
Loans Payable (Textual)
Debt investments												$ 74,500	¥ 457
Long term debt maturities repayments of principal in third year						$ 42,220		¥ 280
Interest rate						12.50%		12.50%
Interest expense						$ 2,310
Capitalized interest to construction in progress						1,700
Loan payable outstanding balance						61,510
Debt amount paid						7,540		¥ 50
Entrusted loan [Member] | Xi'an TCH [Member]
Loans Payable (Textual)
Loan payable						11,330
Capitalized interest to construction in progress						$ 11,330
Zhonghong [Member]
Loans Payable (Textual)
Loan payable for first three years, description						During the first three years from the first release of the loan, the balance in its account shall be no less than RMB 7.14 million ($1.19 million) on the 20th day of the second month of each quarter and no less than RMB 14.28 million ($2.38 million) on the 14th day of the last month of each quarter.
Loan payable for fourth year, description						During the fourth year from the first release of the loan, the balance in its account shall be no less than RMB 1.92 million ($0.32 million) on the 20th day of the second month of each quarter and no less than RMB 3.85 million ($0.64 million) on the 14th day of the last month of each quarter.
Loan payable for fifth year, description						During the fifth year from the first release of the loan, the balance in its account shall be no less than RMB 96,300 ($16,050) on the 20th day of the second month of each quarter and no less than RMB 192,500 ($32,080) on the 14th day of the last month of each quarter.
Long term debt maturities repayments of principal in third year										$ 42,220	¥ 280
HYREF Fund [Member]
Loans Payable (Textual)
Equity investments												500	3
Debt investments												74,500	457
Total fund capital contribution												$ 75,000	¥ 460

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