Commitments And Contingencies (Minimum Annual Rentals On Leases Including Related Party Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013
Long-term Purchase Commitment [Line Items]
2014	$ 22,762
2015	17,365
2016	13,250
2017	8,587
2018	4,207
Thereafter	31,511
Total	97,682
Related Party Commitments [Member]
Long-term Purchase Commitment [Line Items]
2014	2,296
2015	2,314
2016	2,350
2017	2,353
2018	2,372
Thereafter	29,673
Total	$ 41,358