Loans (Narrative) (Details) ¥ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2018 CNY (¥)
Loans 1 | ¥		¥ 130.0
Loans 2	$ 20,700,000
Loans 3 | ¥		¥ 126.8
Loans 4	$ 20,200,000
Loans 5	7.20%	7.20%
Loans 6 | ¥		¥ 3.2
Loans 7	$ 500,000
Loans 8	$ 200,000
Loans 9	50.00%	50.00%
Loans 10 | ¥		¥ 10.0
Loans 11	$ 1,600,000
Loans 12 | ¥		40.0
Loans 13	6,400,000
Loans 14 | ¥		¥ 10.0
Loans 15	$ 1,600,000
Loans 16	6.525%	6.525%
Loans 17	$ 6,400,000
Loans 18	50.00%	50.00%
Loans 19 | ¥		¥ 100.0
Loans 20	$ 15,900,000
Loans 21	100.00%	100.00%
Loans 22 | ¥		¥ 97.3
Loans 23	$ 15,500,000
Loans 24	50.00%	50.00%
Loans 25	4.505%	4.505%
Loans 26 | ¥		¥ 100.0
Loans 27	$ 15,900,000
Loans 28 | ¥		62.8
Loans 29	10,000,000
Loans 30	9,000,000
Loans 31	1,000,000
Loans 32 | ¥		¥ 10.0
Loans 33	1,600,000
Loans 34	1,600,000
Loans 35	1,600,000
Loans 36	6,200,000
Loans 37	358,960
Loans 38	$ 530,456