Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	May 31, 2013	Aug. 31, 2013
Purchase of noncontrolling interest			$ 0	$ 0
Net cash used in investing activities	(15,917,000)	(25,921,000)	(90,355,000)	(112,450,000)
Purchase of noncontrolling interest			(24,734,000)	(24,734,000)
Net cash provided by (used in) financing activities	6,215,000	20,284,000	35,289,000	(4,147,000)
Number of Days Used To Determine Short Term Highly Liquid Investments Treatment As Cash Equivalents	90 days
Book Overdrafts	22,000,000			31,000,000
Financing Receivable, Allowance for Credit Losses	8,000,000			8,000,000
Cash, FDIC Insured Amount	250,000
Customer Issued Letters Of Credit	29,000,000			94,000,000
Scenario, Previously Reported [Member]
Purchase of noncontrolling interest			(24,734,000)	(24,734,000)
Net cash used in investing activities			(115,089,000)	(137,184,000)
Purchase of noncontrolling interest			0	0
Net cash provided by (used in) financing activities			60,023,000	20,587,000
Restatement Adjustment [Member]
Purchase of noncontrolling interest			24,734,000	24,734,000
Net cash used in investing activities			24,734,000	24,734,000
Purchase of noncontrolling interest			(24,734,000)	(24,734,000)
Net cash provided by (used in) financing activities			(24,734,000)	(24,734,000)
Prior Year Statement of Cash Flows Classification Error [Member]
Prior Period Error Correction, Statement of Cash Flows Classification	$ 24,700,000