Cash Equivalents and Equity Securities (Tables)

6 Months Ended

Jun. 30, 2020

Cash Equivalents and Marketable Securities [Abstract]

Schedule of cash equivalents

Cash equivalents at June 30, 2020 and December 31, 2019 consisted of the following (in thousands):

	June 30, 2020				December 31, 2019
	Adjusted Cost		Estimated Fair Value		Adjusted Cost		Estimated Fair Value
Money market funds (1)	$	58,482	$	58,482	$	71,248	$	71,248

⁽¹⁾ Money market funds are classified in cash and cash equivalents on our unaudited condensed consolidated balance sheets.