Accounting Policies Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Schedule of Equity Method Investments [Line Items]
Company's portion of net loss (pre-tax)	$ (28,245)	$ (17,581)	$ (4,161)	$ 20,906
Brooklyn Basketball Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Revenues			57,470	49,132
Operating expenses			(81,151)	(71,647)
Interest expense, net			(7,228)	(6,764)
Depreciation and amortization			(4,938)	(4,599)
Net loss (pre-tax)			(35,847)	(33,878)
Company's portion of net loss (pre-tax)			$ (15,230)	$ (3,686)