Cash Equivalents and Investments (Tables)

6 Months Ended

Jun. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

Investments held at June 30, 2021 and December 31, 2020 are summarized as follows (in thousands):

	June 30, 2021		December 31, 2020
Corporate securities	$	69,897	$	71,095
Municipal debt securities		15,897		18,707
Federal home loan securities		4,967		8,017
Certificates of deposit		4,717		5,991
U.S. Treasury securities		5,285		1,060
	$	100,763	$	104,870