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Fair-Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Summary Of Valuation Of Financial Instruments At Fair-Value



	December 31, 2013
(Dollars in thousands)	Total		Level 1		Level 2		Level 3
Cash equivalents	$	441,199	$	99,092	$	342,107	$	—



	December 31, 2012
	Total		Level 1		Level 2		Level 3
Cash equivalents	$	378,266	$	70,488	$	307,778	$	—
Current marketable securities	3,200		—		3,200		—

Changes In Fair Values Of Auction-Rate Security



(Dollars in thousands)	Auction-rate security
Balance at December 31, 2011	$	5,354
Gains (Losses)
Included in earnings	(367		)
Included in other comprehensive income	371
Settlements and Sales
Settlements	(75		)
Sales	(5,283		)
Balance at December 31, 2012	$	—

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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