The following represents non-cash activities and supplemental information to the consolidated statements of cash flows:



	Fiscal Years Ended January 31,
	2012			2011			2010
	(In thousands)
Non-cash operating items:
Net loss of discontinued operations	$	910		$	91,028		$	270,794
Depreciation and amortization	53,300			49,205			49,441
Impairment of auction rate securities	—			407			6,914
Impairment of UBS put	—			6,696			6,889
Loss on extinguishment of debt	8,136			—			—
Provision for doubtful accounts	1,055			1,863			845
Stock-based compensation expense	26,821			35,539			38,575
Excess tax benefits from stock award plans	(847		)	(815		)	—
Operating asset write-downs	270			334			650
Deferred income taxes	32,962			40,454			(53,962		)
Net realized gains on sale of investments	(24,414		)	(23,810		)	(10,760		)
Equity in losses of unconsolidated affiliates, net of tax	(64		)	20			6
Provision for inventory reserves	658			2,304			2,509
Losses on derivative financial instruments	896			5,863			14,709
Other non-cash items, net	(1,772		)	(821		)	1,328
Net non-cash operating items—continuing operations	$	97,911		$	208,267		$	327,938
Non-cash investing transactions—continuing operations:
Accrued but unpaid purchases of property and equipment	$	832		$	1,047		$	642
Inventory transfers to property and equipment	$	637		$	874		$	621
Liabilities for contingent consideration in business combinations	$	42,404		$	3,424		$	—
Stock options exercised, proceeds received subsequent to period end	$	383		$	65		$	—
Purchases under supplier financing arrangements	$	1,090		$	1,859		$	—
Cash paid during the year for interest—continuing operations	$	29,227		$	21,053		$	24,705
Cash paid during the year for income taxes—continuing operations	$	17,003		$	8,578		$	11,841