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Marketable Securities: (Tables)

12 Months Ended

Dec. 31, 2011

Marketable Securities:

Reconciliation of marketable securities

		2011			2010
Government debt securities, at par value		$	25,147		$	26,509
Less discount			(314	)		(574	)
			24,833			25,935
Unrealized gain			1,803			2,612
Fair value		$	26,636		$	28,547

Future contractual maturities of marketable securities

1 year or less		$	1,378
2 to 5 years			23,769
		$	25,147

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- Definition

A table of investments, shown as a text block.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

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Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

+ References

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