Investments (Tables)

6 Months Ended

Jun. 30, 2013

Schedule of investments in available-for-sale securities at fair values

Investments in available-for-sale securities at fair value were as follows for the periods ended (in thousands):



	June 30, 2013									December 31, 2012
Description of the Securities	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Agency securities	$	461,338	$	1,465	$	(978	)	$	461,825	$	400,365	$	2,347	$	(5	)	$	402,707
Corporate securities	629,911		578		(1,015		)	629,474		404,546		947		(171		)	405,322
Municipal securities	64,238		17		(171		)	64,084		32,214		114		(15		)	32,313
Government securities	101,295		62		(153		)	101,204		39,863		131		(1		)	39,993
Total	$	1,256,782	$	2,122	$	(2,317	)	$	1,256,587	$	876,988	$	3,539	$	(192	)	$	880,335

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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