Investments in Debt and Equity Securities (Tables)

9 Months Ended

Sep. 30, 2012

Investments in Debt and Equity Securities

Summary of activities for available-for-sale securities

	Gross Unrealized
		(dollars in thousands)
September 30, 2012	Cost		Gains		Losses			Fair Value
Equity	$	151,786	$	45,123	$	(4,909	)	$	192,000
Debt		167,106		10,771		(3,757	)		174,120
Other		6,610		—		—			6,610
Total	$	325,502	$	55,894	$	(8,666	)	$	372,730

	Gross Unrealized
		(dollars in thousands)
December 31, 2011		Cost		Gains		Losses			Fair Value
Equity	$	149,263	$	29,789	$	(9,996	)	$	169,056
Debt		160,218		18,021		(11,063	)		167,176
Other		15,646		1,035		(1,541	)		15,140
Total	$	325,127	$	48,845	$	(22,600	)	$	351,372