Fair Value Of Financial Instruments (Tables)

3 Months Ended

Jul. 31, 2012

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Financial Instruments

									(in 000s)
As of	July 31, 2012				April 30, 2012
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value		Fair Value Hierarchy
Assets:
Cash and cash equivalents	$	939,871	$	939,871	$	1,944,334	$	1,944,334		Level 1
Cash and cash equivalents – restricted		43,109		43,109		48,100		48,100		Level 1
Receivables, net – short-term		116,357		116,357		193,858		193,858		Level 1
Mortgage loans held for investment, net		386,759		238,658		406,201		248,535		Level 3
Investments in available-for-sale securities		381,791		381,791		372,352		372,352		Level 2
Receivables, net – long-term		128,930		128,930		127,468		127,468		Level 1 & 3
Note receivable (including interest)		56,917		62,748		55,444		55,444		Level 3
Liabilities:
Deposits		653,681		653,382		833,047		831,251		Level 1 & 3
Long-term debt		1,009,634		1,037,169		1,040,549		1,077,223		Level 3