Investments (Tables)

9 Months Ended

Sep. 30, 2017

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):



	September 30, 2017									December 31, 2016
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	$	483,398	$	557	$	(1,297	)	$	482,658	$	411,963	$	699	$	(1,169	)	$	411,493
Corporate securities	802,969		576		(1,065		)	802,480		842,887		193		(2,114		)	840,966
Municipal securities	3,965		12		—			3,977		9,989		3		(4		)	9,988
Government securities	329,245		55		(570		)	328,730		445,083		135		(600		)	444,618
Total	$	1,619,577	$	1,200	$	(2,932	)	$	1,617,845	$	1,709,922	$	1,030	$	(3,887	)	$	1,707,065

- 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.

+ References + Details