Revenue Recognition (Details) (USD $)	3 Months Ended		9 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Gross Revenues And Contractual Allowances [Line Items]
Gross billed charges	$ 8,148,181	$ 5,062,079	$ 21,806,599	$ 14,197,824
Allowances	5,399,409	3,503,317	14,567,193	9,683,213
Net revenue	$ 2,748,772	$ 1,558,762	$ 7,239,406	$ 4,514,611
Allowance percentage	66.00%	69.00%	67.00%	68.00%