Investments (Tables)

3 Months Ended

Apr. 30, 2012

Investments, Debt and Equity Securities [Abstract]

Summary Of Available-For-Sale Securities

As of January 31, 2012, the Company had other investments in available-for-sale securities which are set forth in the following table:

	January 31, 2012
			Included in Accumulated Other Comprehensive Income
	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Cumulative Impairment Charges			Estimated Fair Value
	(In thousands)
Short-term:
Auction rate securities - Corporate issuers	$	7,500	$	34	$	—	$	(7,262	)	$	272
Total short-term investments	$	7,500	$	34	$	—	$	(7,262	)	$	272

Gross Realized Gains And Losses On Investments

The gross realized gains and losses on the Company’s investments for the three months ended April 30, 2012 and 2011 are as follows:

	Three Months Ended April 30,
	Gross Realized Gains		Gross Realized Losses
	(In thousands)
2012	$	156	$	—
2011	$	95	$	—

Components Of Other Comprehensive Income Related To Available-For-Sale Securities

The components of other comprehensive income (“OCI”) related to available-for-sale securities are as follows:

	Three Months Ended April 30,
	2012			2011
	(In thousands)
Accumulated OCI related to available-for-sale securities, beginning of the period	$	(3,760	)	$	17,871
Unrealized gains on available-for-sale securities	—			161
Reclassification adjustment for gains included in net loss	(34		)	(65		)
Changes in accumulated OCI on available-for-sale securities, before tax	(34		)	96
Deferred income tax benefit	3,794			—
Changes in accumulated OCI on available-for-sale securities, net of tax	3,760			96
Accumulated OCI related to available-for-sale securities, end of the period	$	—		$	17,967