Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income from discontinued operations
Net revenue	$ 0	$ 26,050	$ 0	$ 123,807
Income from operations of TSG	0	(3,142)	0	(1,781)
Income tax expense	0	7,057	0	7,767
Income from discontinued operations	0	10,487	0	11,138
Gain on sale of TSG	0	20,686	0	20,686
Income on sale of TSG	$ 0	$ 17,544	$ 0	$ 18,905