Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2023

Summary of Significant Accounting Policies [Abstract]

Adjusted Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value of Financial Assets

The following tables show the adjusted cost, gross unrealized gains, gross unrealized losses, and fair value of our securities by significant investment category as of June 30, 2023 and December 31, 2022.

	June 30, 2023
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash and Cash Equivalents		Investments Available for Sale
Cash	$	1,693	$	—	$	—		$	1,693	$	1,693	$	—
Level 1:
Mutual funds		20,077		—		—			20,077		20,077		—
U.S. agency and treasury securities		44,645		3		(189	)		44,459		4,200		40,259
		64,722		3		(189	)		64,536		24,277		40,259
Total	$	66,415	$	3	$	(189	)	$	66,229	$	25,970	$	40,259

	December 31, 2022
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash and Cash Equivalents		Investments Available for Sale
Cash	$	16,949	$	—	$	—		$	16,949	$	16,949	$	—
Level 1:
Mutual funds		66,493		—		—			66,493		66,493		—
U.S. agency and treasury securities		68,958		9		(386	)		68,581		3,119		65,462
		135,451		9		(386	)		135,074		69,612		65,462
Total	$	152,400	$	9	$	(386	)	$	152,023	$	86,561	$	65,462