Pension Plan (Details Textual) (USD $)	6 Months Ended	12 Months Ended
	Aug. 31, 2012	Feb. 29, 2012
Defined Benefit Plan Disclosure [Line Items]
Company expect to make cash contribution to the plan	$ 0
Employee Benefit Plans (Textual) [Abstract]
Minimum required contribution to the plan is approximately	0
Contribution to its pension plan during fiscal year		3,000,000
Employees Covered Under Non Contributory Pension Plan	9.00%
Compensation Period Preceding Retirement And Termination	5 years
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Company expect to make cash contribution to the plan	3,000,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Company expect to make cash contribution to the plan	$ 2,000,000