INVESTMENTS

12 Months Ended

Dec. 31, 2012

INVESTMENTS

INVESTMENTS

NOTE B—INVESTMENTS

        The amortized cost, unrealized gains and estimated fair values of the Company's available-for-sale securities held are summarized as follows:

	December 31,
	2012		2011
	(in thousands)
U.S. Treasury Bonds, stripped of interest, maturing 2020 and 2022, aggregate par value of $1.6 million and $1.7 million, respectively
Amortized cost	$	943	$	894
Gross unrealized gains		472		455
Estimated fair value	$	1,415	$	1,349

        During 2012, 2011, and 2010, the Company recognized approximately $4, $0 and $0 thousand, respectively, of realized gains from its investments in available-for-sale securities. The basis of available for sale securities sold is determined using the specific identification method.

        The realized gains for each year results from the disposition of such securities due to the release of the Company's obligation related to securing its commitment under debentures (Notes C & F).

        The amortized cost and estimated fair values of available-for-sale securities, by contractual maturity at December 31, 2012 are shown below.

	Amortized cost		Estimated fair value
	(in thousands)
Due within one year	$	94	$	142
Due after one year through five years		—		—
Due after five years through ten years		849		1,273
Due after ten years		—		—
Total	$	943	$	1,415