Schedule of Long-Term Assets by Geographic Segment (Details) (USD $)	3 Months Ended	12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012
Segment Information Schedule Of Long-term Assets By Geographic Segment 1	$ 17,474,487
Segment Information Schedule Of Long-term Assets By Geographic Segment 2	10,612,052
Segment Information Schedule Of Long-term Assets By Geographic Segment 3	1,073,407
Segment Information Schedule Of Long-term Assets By Geographic Segment 4	0
Segment Information Schedule Of Long-term Assets By Geographic Segment 5	13,080,555
Segment Information Schedule Of Long-term Assets By Geographic Segment 6	42,240,501
Segment Information Schedule Of Long-term Assets By Geographic Segment 7	8,744,398
Segment Information Schedule Of Long-term Assets By Geographic Segment 8	6,572
Segment Information Schedule Of Long-term Assets By Geographic Segment 9	40,258
Segment Information Schedule Of Long-term Assets By Geographic Segment 10	57,039
Segment Information Schedule Of Long-term Assets By Geographic Segment 11	42,816
Segment Information Schedule Of Long-term Assets By Geographic Segment 12	8,891,083
Segment Information Schedule Of Long-term Assets By Geographic Segment 13	5,529,275
Segment Information Schedule Of Long-term Assets By Geographic Segment 14	15,000
Segment Information Schedule Of Long-term Assets By Geographic Segment 15	813
Segment Information Schedule Of Long-term Assets By Geographic Segment 16	0
Segment Information Schedule Of Long-term Assets By Geographic Segment 17	5,545,088
Segment Information Schedule Of Long-term Assets By Geographic Segment 18	31,748,160
Segment Information Schedule Of Long-term Assets By Geographic Segment 19	10,633,624
Segment Information Schedule Of Long-term Assets By Geographic Segment 20	1,114,478
Segment Information Schedule Of Long-term Assets By Geographic Segment 21	57,039
Segment Information Schedule Of Long-term Assets By Geographic Segment 22	13,123,371
Segment Information Schedule Of Long-term Assets By Geographic Segment 23	56,676,672
Segment Information Schedule Of Long-term Assets By Geographic Segment 1		17,823,405
Segment Information Schedule Of Long-term Assets By Geographic Segment 2		10,612,052
Segment Information Schedule Of Long-term Assets By Geographic Segment 3		1,078,907
Segment Information Schedule Of Long-term Assets By Geographic Segment 4		0
Segment Information Schedule Of Long-term Assets By Geographic Segment 5		13,080,556
Segment Information Schedule Of Long-term Assets By Geographic Segment 6		42,594,920
Segment Information Schedule Of Long-term Assets By Geographic Segment 7		8,919,784
Segment Information Schedule Of Long-term Assets By Geographic Segment 8		7,331
Segment Information Schedule Of Long-term Assets By Geographic Segment 9		45,987
Segment Information Schedule Of Long-term Assets By Geographic Segment 10		63,476
Segment Information Schedule Of Long-term Assets By Geographic Segment 11		44,656
Segment Information Schedule Of Long-term Assets By Geographic Segment 12		9,081,234
Segment Information Schedule Of Long-term Assets By Geographic Segment 13		5,527,227
Segment Information Schedule Of Long-term Assets By Geographic Segment 14		15,000
Segment Information Schedule Of Long-term Assets By Geographic Segment 15		813
Segment Information Schedule Of Long-term Assets By Geographic Segment 16		0
Segment Information Schedule Of Long-term Assets By Geographic Segment 17		0
Segment Information Schedule Of Long-term Assets By Geographic Segment 18		5,543,040
Segment Information Schedule Of Long-term Assets By Geographic Segment 19		32,270,416
Segment Information Schedule Of Long-term Assets By Geographic Segment 20		10,634,383
Segment Information Schedule Of Long-term Assets By Geographic Segment 21		1,125,707
Segment Information Schedule Of Long-term Assets By Geographic Segment 22		63,476
Segment Information Schedule Of Long-term Assets By Geographic Segment 23		13,125,212
Segment Information Schedule Of Long-term Assets By Geographic Segment 24		$ 57,219,194