Investments (Tables)

3 Months Ended

Jul. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Amortized Cost And Fair Value Of Securities Available-For-Sale

The amortized cost and fair value of securities classified as available-for-sale (AFS) are summarized below:

(in 000s)
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
As of July 31, 2014:
Mortgage-backed securities	$	401,092	$	2,582	$	—		$	403,674
Municipal bonds	4,106		183		—			4,289
U.S. treasury bills	100		—		—			100
	$	405,298	$	2,765	$	—		$	408,063
As of July 31, 2013:
Mortgage-backed securities	489,401		3,825		(10,623		)	482,603
Municipal bonds	4,164		266		—			4,430
	$	493,565	$	4,091	$	(10,623	)	$	487,033
As of April 30, 2014:
Mortgage-backed securities	$	420,697	$	2,798	$	—		$	423,495
Municipal bonds	4,120		209		—			4,329
	$	424,817	$	3,007	$	—		$	427,824