Stock Compensation (Details) (USD $) Share data in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Compensation costs included in net income
Gross compensation cost	$ 1,508,000	$ 1,113,000	$ 11,536,000	$ 3,457,000
Income tax benefits	(499,000)	(385,000)	(3,952,000)	(1,216,000)
Stock compensation cost, net of tax benefit	1,009,000	728,000	7,584,000	2,241,000
Stock Compensation (Textuals) [Abstract]
Issuance of Class A Non-voting Common Stock	17,000		40,800
Proceeds from exercise of stock options	200,000		397,000	1,536,000
Chief Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Accelerated vesting of restricted stock			7,300,000
Income tax benefit			$ 2,500,000