Stockholders' Equity (Shares Available for Grant) (Details)	12 Months Ended
	Aug. 31, 2018 shares
Reconciliation of Shares Available to be Issued [Roll Forward]
Balance as of beginning of period	12,228,936
SARS canceled	35,439
Restricted stock awards forfeited, net of grants	572,783
Balance as of end of period	12,837,158