Divestitures (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Results of discontinued operations
Revenues	$ 60,265	$ 62,309	$ 178,118	$ 185,377
Income from discontinued operations before income taxes	22,573	30,530	67,793	81,517
Less income tax provision	7,288	9,012	22,158	26,338
Income from discontinued operations, net	$ 15,285	$ 21,518	$ 45,635	$ 55,179