Quarterly report pursuant to Section 13 or 15(d)

Guarantor Subsidiaries (Narrative) (Details)

v2.4.0.6
Guarantor Subsidiaries (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
Feb. 29, 2012
Feb. 28, 2011
Feb. 29, 2012
6.875% Senior Notes [Member]
Aug. 31, 2011
6.875% Senior Notes [Member]
Jun. 12, 2007
6.875% Senior Notes [Member]
Guarantor Obligations [Line Items]          
Issuance of Senior Notes     $ 249,481 $ 249,432 $ 250,000
Debt instrument, interest rate 2.00% 2.00% 6.875%   6.875%