Organization and Summary of Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013
Schedule of contractual maturities of the Company's available-for-sale non-equity investments
Maturing within one year, face value	$ 5,266
Maturing in one to three years, face value	747
Available-for-sale securities, face value, Total	6,013
Maturing within one year, fair value basis	5,267,188
Maturing in one to three years, fair value basis	747,443
Available-for-sale securities, fair value basis, Total	$ 6,014,631