Cash Equivalents And Restricted Securities

9 Months Ended

Sep. 30, 2020

Cash Equivalents And Restricted Securities [Abstract]

Cash Equivalents And Restricted Securities

5. Cash Equivalents and Restricted Securities 

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

			Unrealized		Estimated
			Holding		Market
September 30, 2020	Cost Basis		Gains		Value
Cash equivalents:
Money market funds	$	11,483	$	--	$	11,483
Restricted securities:
Money market funds		513		--		513
Total assets	$	11,996	$	--	$	11,996
			Unrealized		Estimated
			Holding		Market
December 31, 2019	Cost Basis		Gains		Value
Cash equivalents:
Money market funds	$	1,472	$	--	$	1,472
Restricted securities:
Money market funds		528		--		528
Total assets	$	2,000	$	--	$	2,000

As of September 30, 2020 and December 31, 2019 $513,000 and $528,000, respectively, of our 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.

There were no gross realized gains or losses on cash equivalents and restricted securities in the three and nine months ended September 30, 2020 and 2019. As of September 30, 2020 $513,000 of our restricted securities had a maturity date within three months. As of December 31, 2019 $528,000 of our restricted securities had a maturity date within three months.