The percentage points added to the reference rate to compute the variable rate on the convertible debt securities.

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The price per share of the conversion feature embedded in the convertible debt securities.

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The reference rate for the variable rate of the convertible debt securities, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Represents the monetary increment of additional investment subscriptions.

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Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

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Balance held at close of period in number of shares.

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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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Investment in JJB Sports (Details) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended			3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Apr. 28, 2012 USD ($)	Jul. 28, 2012 USD ($)	Jul. 30, 2011 USD ($)	Jul. 28, 2012 USD ($)	Jul. 30, 2011 USD ($)	Apr. 27, 2012 GBP (£)	Jul. 28, 2012 JJB Sports equity securities USD ($)	Jul. 28, 2012 JJB Sports equity securities USD ($)	Apr. 27, 2012 JJB Sports equity securities GBP (£)	Jul. 28, 2012 JJB Sports convertible notes USD ($)	Jul. 28, 2012 JJB Sports convertible notes USD ($)	Jul. 28, 2012 JJB Sports convertible notes GBP (£)	Apr. 27, 2012 JJB Sports convertible notes GBP (£)	Jul. 28, 2012 JJB Sports convertible notes Conversion Terms at Company Option, after April 27,2013 GBP (£)	Jul. 28, 2012 JJB Sports convertible notes Conversion Terms at JJB Option, after January 26, 2014 GBP (£)	Jul. 28, 2012 JJB Sports convertible notes Conversion Terms, Event of Default GBP (£)	Jul. 28, 2012 Second Convertible Notes Minimum GBP (£)	Jul. 28, 2012 Second Convertible Notes Maximum GBP (£)
Investment in JJB Sports
Aggregate investment amount						£ 20,000,000			£ 1,250,000				£ 18,750,000
Ordinary shares									12.5
Total cash outlay	31,986,000			31,986,000	0
Interest rate, variable rate basis											LIBOR
Interest rate added to base rate (as a percent)												5.00%
Minimum amount of convertible notes and accrued interest for conversion														5,000,000	5,000,000	5,000,000
Exceeds earnings before interest, taxes, depreciation and amortization															25,000,000
Initial conversion price of convertible notes into common stock (in pounds per share)												£ 0.067
Initial conversion price of accrued interest into common stock (in pounds per share)												£ 0.10
Subscriptions amount																	5,000,000	20,000,000
Other-than-temporary impairment charges on available-for-sale securities		$ 32,370,000	$ 0	$ 32,370,000	$ 0		$ 2,023,000	$ 2,023,000		$ 30,347,000	$ 30,347,000