Cash, Cash Equivalents and Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2020

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, 2020						December 31, 2019
(in thousands)	Cash & Cash Equivalents		Marketable Securities		Total		Cash & Cash Equivalents		Marketable Securities		Total
Overnight holdings	$	398,668	$	—	$	398,668	$	349,857	$	—	$	349,857
Investment holdings	43,278		31,952		75,230		13,218		34,728		47,946
Cash in demand accounts	29,378		—		29,378		36,521		—		36,521
Outstanding checks	(11,925)		—		(11,925)		(32,254)		—		(32,254)
Total	$	459,399	$	31,952	$	491,351	$	367,342	$	34,728	$	402,070