XML 19 R31.htm IDEA: XBRL DOCUMENT

Contractual Maturities of Debt Securities Classified as Held to Maturity (Detail) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Apr. 30, 2012
Schedule of Held-to-maturity Securities [Line Items]
Due within one year	$ 447	$ 1,198
Due within two years		230
Due within three years
Due after three years
Total Due	$ 447	$ 1,428

Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year through the fifth fiscal year following the latest fiscal year.

+ References+ Details

- Definition

Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year following the latest fiscal year.

+ References+ Details