Investments

9 Months Ended

Sep. 30, 2022

Debt Securities, Available-for-Sale [Abstract]

Historically, we have invested our excess cash primarily in debt instruments of financial institutions, corporations, U.S. government-sponsored agencies and the U.S. Treasury. We generally hold our investments to maturity and do not sell our investments before we have recovered our amortized cost basis.


				Unrealized
	Maturity (in years)	Amortized cost		Gains		Losses		Estimated fair value
As of September 30, 2022


U.S. Treasury securities	1 or less	$	25,341	$	—	$	(31)	$	25,310

		$	25,341	$	—	$	(31)	$	25,310

As of December 31, 2021, our cash balance was comprised entirely of cash and cash equivalents (money market funds) and there was no unrealized gain or loss.