Cash Equivalents And Restricted Securities

6 Months Ended

Jun. 30, 2017

Cash Equivalents And Restricted Securities [Abstract]

Cash Equivalents And Restricted Securities

3. Cash Equivalents and Restricted Securities

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


			Unrealized		Estimated
			Holding		Market
June 30, 2017	Cost Basis		Gains		Value
Cash equivalents:
Money market funds	$	370	$	--	$	370
Restricted securities:
Money market funds		741		--		741

			Unrealized		Estimated
			Holding		Market
December 31, 2016	Cost Basis		Gains		Value
Cash equivalents:
Money market funds	$	3,466	$	--	$	3,466
Restricted securities:
Money market funds		699		--		699

As of June 30, 2017 and December 31, 2016 $741,000 and $699,000, 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 primarily to international tax obligations.

There were no gross realized gains or losses on cash equivalents in the three and six months ended June 30, 2017 and 2016. As of June 30, 2017 $741,000 of our restricted securities had a maturity date between three months and one year. As of December 31, 2016 $490,000 of our restricted securities had a maturity date within three months and $209,000 had a maturity date between three months and one year.