Common Stock, Options, and Stock Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Gross compensation costs
Total gross compensation costs	$ 7,314	$ 6,714	$ 13,208
Income tax benefits
Total income tax benefits	(2,460)	(2,203)	(4,509)
Net compensation expense	4,854	4,511	8,699
Stock Options [Member]
Gross compensation costs
Total gross compensation costs	0	0	0
Income tax benefits
Total income tax benefits	0	(39)	(1)
Restricted Stock [Member]
Gross compensation costs
Total gross compensation costs	7,314	6,714	13,208
Income tax benefits
Total income tax benefits	$ (2,460)	$ (2,164)	$ (4,508)
Common Class A [Member]
Information on Class A Common Stock issued as acquisition
Shares issued due to acquisitions	1,965,000	635,000	209,000
Shares issued due to purchase of subsidiary shares from noncontrolling interest	592,000	0	0