Discontinued Operations (Details) (USD $)	3 Months Ended				12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Discontinued Operations and Disposal Groups [Abstract]
Aggregate purchase price				$ 62,800,000
Discontinued operations:
Net revenue						123,807,000	474,051,000
Loss from operations of TSG						(1,781,000)	(32,732,000)
Gain on sale of TSG						19,486,000	0
Income (loss) on sale of TSG						17,705,000	(32,732,000)
Income tax expense (benefit)						6,249,000	(232,000)
Income (loss) from discontinued operations	$ 1,053,000	$ (735,000)	$ 10,487,000	$ 651,000	$ 0	$ 11,456,000	$ (32,500,000)