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Cash Equivalents And Investments (Tables)

3 Months Ended

Mar. 31, 2012

Cash Equivalents And Investments [Abstract]

Schedule Of Investments

		March 31, 2012								December 31, 2011
		Short-Term				Long-Term				Short-Term				Long-Term
Municipal debt securities		$	3,938			$	26,469			$	4,139			$	26,964
Federal home loan securities			—				17,099				—				18,027
		$	3,938			$	43,568			$	4,139			$	44,991

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Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.

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