Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Disclosure Text Block

Fair value measurements

		Level within	June 30,				December 31,
		the Fair Value	2012				2011
		Hierarchy	Book Value		Fair Value		Book Value		Fair Value
(Dollars in thousands)
Cash and cash equivalents		1	$	613,764	$	613,764	$	563,275	$	563,275
Short-term investments (1)(2)
	Certificates of deposit	1		—		—		27,444		27,444
	Government-backed securities (3)	1		150,921		150,921		218,829		218,829
Long-term investments (1)(4)
	Government-backed securities (3)	1		55,468		55,468		45,138		45,310
Long-term debt (5)
	Publicly traded	1		983,250		1,048,431		983,250		1,043,549
	Non-public	2		542,301		549,233		542,398		543,309

• Designated as held-to-maturity investments and recorded at amortized cost in the Consolidated Balance Sheet.
• Maturities are less than twelve months from the respective balance sheet dates.
• Includes U.S. treasuries and corporate notes guaranteed under the Federal Deposit Insurance Corporation's Temporary Liquidity Guarantee Program.
• At June 30, 2012, maturities range between 12 and 21 months.
• Excludes capital lease obligations and current portion of Long-term debt.