Summary of significant accounting policies (Narrative) (Details) - 9 months ended Mar. 31, 2016	USD ($) d	CNY (¥) d
Summary Of Significant Accounting Policies 1 | ¥		¥ 6.45
Summary Of Significant Accounting Policies 2	$ 1.00
Summary Of Significant Accounting Policies 3 | ¥		6.11
Summary Of Significant Accounting Policies 4	1.00
Summary Of Significant Accounting Policies 5 | ¥		6.40
Summary Of Significant Accounting Policies 6 | ¥		¥ 6.15
Summary Of Significant Accounting Policies 7	$ 1.00
Summary Of Significant Accounting Policies 8	6.00%	6.00%
Summary Of Significant Accounting Policies 9	3.00%	3.00%
Summary Of Significant Accounting Policies 10	3.00%	3.00%
Summary Of Significant Accounting Policies 11	$ 600,000.0
Summary Of Significant Accounting Policies 12	$ 2,700,000.0
Summary Of Significant Accounting Policies 13 | d	30	30
Summary Of Significant Accounting Policies 14	$ 39,000
Summary Of Significant Accounting Policies 15	67,000
Summary Of Significant Accounting Policies 16 | ¥		¥ 100,000,000
Summary Of Significant Accounting Policies 17	$ 16,400,000
Summary Of Significant Accounting Policies 18	30	30
Summary Of Significant Accounting Policies 19	10.00%	10.00%
Summary Of Significant Accounting Policies 20	$ 300,000.0
Summary Of Significant Accounting Policies 21	$ 900,000.0
Summary Of Significant Accounting Policies 22	5.00%	5.00%
Summary Of Significant Accounting Policies 23	50.00%	50.00%
Summary Of Significant Accounting Policies 24	6.00%	6.00%
Summary Of Significant Accounting Policies 25	3.00%	3.00%
Summary Of Significant Accounting Policies 26	3.00%	3.00%
Summary Of Significant Accounting Policies 27	$ 300,000.0
Summary Of Significant Accounting Policies 28	200,000.0
Summary Of Significant Accounting Policies 29	600,000.0
Summary Of Significant Accounting Policies 30	1,000,000.0
Summary Of Significant Accounting Policies 31	500,000.0
Summary Of Significant Accounting Policies 32	22,000
Summary Of Significant Accounting Policies 33	600,000.0
Summary Of Significant Accounting Policies 34	$ 200,000.0