Investment Securities and Certificates of Deposit (Tables)

12 Months Ended

Dec. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Investments

The Company's Investment Securities and Certificates of Deposit as of December 31, 2020 and 2019 were as follows:

	December 31, 2020								December 31, 2019
	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Debt Securities	$	402,824	$	39	$	—	$	402,863	$	114,204	$	591	$	11	$	114,784
Equity Securities	666		—		73		593		666		—		168		498
Debt Securities Carried by Broker-Dealers	550,002		27		3		550,026		225,727		1,648		20		227,355
Investment Funds	87,612		19,742		—		107,354		58,704		7,809		—		66,513
Total Investment Securities (carried at fair value)	$	1,041,104	$	19,808	$	76	$	1,060,836	$	399,301	$	10,048	$	199	$	409,150
Certificates of Deposit (carried at contract value)							—								214,796
Total Investment Securities and Certificates of Deposit							$	1,060,836							$	623,946

Investments Classified by Contractual Maturity Date

Scheduled maturities of the Company's available-for-sale debt securities as of December 31, 2020 and 2019 were as follows:

	December 31, 2020				December 31, 2019
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	402,824	$	402,863	$	108,662	$	109,217
Due after one year through five years	—		—		5,542		5,567
Total	$	402,824	$	402,863	$	114,204	$	114,784