Cash, Cash Equivalents and Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2021

Cash, Cash Equivalents and Marketable Securities [Abstract]

Summary of investments in cash, cash equivalents and marketable securities

The following table summarizes our cash and investments in cash equivalents and marketable securities held by investment managers and overnight investments:

	June 30, 2021						December 31, 2020
(in thousands)	Cash & Cash Equivalents		Marketable Securities		Total		Cash & Cash Equivalents		Marketable Securities		Total
Overnight holdings	$	387,027	$	—	$	387,027	$	503,221	$	—	$	503,221
Investment holdings	47,987		34,597		82,584		47,992		34,529		82,521
Cash in demand accounts	31,931		—		31,931		33,692		—		33,692
Outstanding checks	(11,558)		—		(11,558)		(30,059)		—		(30,059)
Total	$	455,387	$	34,597	$	489,984	$	554,846	$	34,529	$	589,375