Investment Securities and Certificates of Deposit (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Investments

The Company's Investment Securities and Certificates of Deposit as of December 31, 2021 and 2020 were as follows:

	December 31, 2021								December 31, 2020
	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Debt Securities	$	706,826	$	37	$	16	$	706,847	$	402,824	$	39	$	—	$	402,863
Equity Securities	666		193		—		859		666		—		73		593
Debt Securities Carried by Broker-Dealers	784,813		43		14		784,842		550,002		27		3		550,026
Investment Funds	111,682		39,191		—		150,873		87,612		19,742		—		107,354
Total Investment Securities (carried at fair value)	$	1,603,987	$	39,464	$	30	$	1,643,421	$	1,041,104	$	19,808	$	76	$	1,060,836
Certificates of Deposit (carried at contract value)							141,218								—
Total Investment Securities and Certificates of Deposit							$	1,784,639							$	1,060,836

Investments Classified by Contractual Maturity Date

Scheduled maturities of the Company's available-for-sale debt securities as of December 31, 2021 and 2020 were as follows:

	December 31, 2021				December 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	706,826	$	706,847	$	402,824	$	402,863
Total	$	706,826	$	706,847	$	402,824	$	402,863