During 2022, the Company started to invest its cash in slightly higher yielding securities. Investments AFS and the related fair value measurement consisted of the following (dollars in thousands):

	December 30, 2022
										Fair Value Measurements
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value		Level 1		Level 2
Commercial paper	$	44,054	$	11	$	(62	)	$	44,003	$	—	$	44,003
Certificates of deposit		17,355		4		(75	)		17,284		—		17,284
U.S. Treasury securities		21,847		3		(15	)		21,835		21,835		—
U.S. agency securities		10,688		16		(3	)		10,701		—		10,701
Corporate debt securities		45,522		4		(288	)		45,238		—		45,238
Total investments AFS	$	139,466	$	38	$	(443	)	$	139,061	$	21,835	$	117,226

The Company obtains the fair value from third-party pricing services. The pricing services utilize industry standard valuation models, including both income and market-based approaches and observable market inputs to determine value. These observable market inputs include reportable trades, benchmark yields, credit spreads, broker/dealer quotes, bids, offers and other industry and economic events.

The Company assessed each debt security (see Note 1 for information on composition of the portfolio) with gross unrealized losses for credit impairment. As part of that assessment, the Company concluded that it does not intend to sell and it is more-likely-than-not that the Company will not be required to sell, prior to the recovery of the amortized cost basis. The Company did not recognize impairment for the year ended December 30, 2022.

The following table shows the fair value of investments AFS by contractual maturity (dollars in thousands):

	As of December 30, 2022
	Within one year		After one year through five years		Total
Commercial paper	$	44,003	$	—	$	44,003
Certificates of deposit		17,284		—		17,284
U.S. Treasury securities		18,961		2,874		21,835
U.S. agency securities		8,653		2,048		10,701
Corporate debt securities		36,258		8,980		45,238
Total investments AFS	$	125,159	$	13,902	$	139,061

During 2022, the Company sold $359,000 in securities due to a downgraded credit rating. The Company recognized a realized loss upon sale of less than $1,000.