Cash Equivalents And Marketable Securities

12 Months Ended

Dec. 31, 2011

Cash Equivalents And Marketable Securities [Abstract]

Cash Equivalents And Marketable Securities

2. Cash Equivalents and Marketable Securities

The following is a summary of cash equivalents and marketable securities (in thousands):

				Unrealized		Estimated
				Holding		Market
December 31, 2011		Cost Basis		Gains		Value
Cash equivalents:
Money market funds	$	7,334	$	--	$	7,334
Restricted securities:
Money market funds		5,312		--		5,312
December 31, 2010
Cash equivalents:
Money market funds	$	2,056	$	--	$	2,056
U.S. Treasury debt securities		14,099		--		14,099
Restricted securities:
Money market funds		309		--		309
U.S. Treasury debt securities		5,000		--		5,000

     As of December 31, 2011 and 2010 $312,000 and $309,000, respectively, of the Company's money market funds were designated as short-term restricted securities due to a contractual commitment to hold the securities as pledged collateral relating to international tax obligations. As of December 31, 2011 $5.0 million of the Company's money market funds and as of December 31, 2010 $5.0 million of the Company's U.S. Treasury debt securities were designated as restricted securities due to a financial covenant requirement under the Company's credit agreement with General Electric Capital Corporation ("GE Capital"). The Company amended and restated the credit agreement with GE Capital in the fourth quarter of 2011 as discussed in Note 8. As of December 31, 2011 the restriction on the Company's money market funds lapses when then credit agreement with GE Capital expires.

     There were no gross realized gains or losses on cash equivalents or restricted securities for the years ended December 31, 2011, 2010, and 2009. At December 31, 2011 $5.0 million of the Company's restricted securities had no maturity date and $312,000 of the Company's restricted securities had a maturity date within three months. At December 31, 2010 $5.3 million of the Company's restricted securities had a maturity date within three months.