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Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Marketable Securities [Abstract]

Schedule of Investments Available For Sale

Available For Sale and Equity Securities on the accompanying Consolidated Balance Sheets consist of: 

			At September 30, 2021
			Cost Amount						Gross Unrealized Gains						Gross Unrealized (Losses)						Fair Value
Available-for-sale debt securities			$	126,964					$	874					$	—					$	127,838
SEI-sponsored mutual funds			6,692						380						—						7,072
Equities and other mutual funds			4,932						237						—						5,169
			$	138,588					$	1,491					$	—					$	140,079

			At December 31, 2020
			Cost Amount						Gross Unrealized Gains						Gross Unrealized (Losses)						Fair Value
Available-for-sale debt securities			$	91,262					$	2,015					$	—					$	93,277
SEI-sponsored mutual funds			6,866						382						—						7,248
Equities and other mutual funds			4,421						473						—						4,894
			$	102,549					$	2,870					$	—					$	105,419

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- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

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- References

No definition available.

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