Schedule of Property, Plant and Equipment (Details) (USD $)	3 Months Ended
	Oct. 31, 2012
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 1	$ 6,671,959
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 2	(297,651)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 3	6,374,308
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 4	6,671,959
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 5	(258,068)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 6	6,413,891
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 7	2,235,895
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 8	(914,544)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 9	1,321,351
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 10	2,182,251
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 11	(811,016)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 12	1,371,235
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 13	1,852,764
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 14	(1,140,289)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 15	712,475
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 16	1,841,119
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 17	(1,063,240)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 18	777,879
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 19	645,070
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 20	(414,025)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 21	231,045
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 22	636,240
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 23	(378,651)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 24	257,589
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 25	193,013
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 26	(117,205)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 27	75,808
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 28	193,013
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 29	(108,531)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 30	84,482
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 31	175,144
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 32	0
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 33	175,144
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 34	175,144
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 35	0
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 36	175,144
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 37	9,970
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 38	(9,018)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 39	952
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 40	9,970
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 41	(8,956)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 42	1,014
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 43	11,783,815
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 44	(2,892,732)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 45	8,891,083
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 46	11,709,696
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 47	(2,628,462)
Property, Plant And Equipment Schedule Of Property, Plant And Equipment 48	$ 9,081,234