Investments (Tables)

3 Months Ended

Mar. 26, 2022

Amortized Cost and Fair Value of Available-for-Sale Investments

The amortized cost and fair values of available-for-sale investments are as follows at March 26, 2022 and December 25, 2021 (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
March 26, 2022
Money market investments	$	14,913	$	—	$	—	$	14,913
Asset-backed securities		21,259		—		1,435		19,824
Corporate bonds and direct obligations of government agencies		133,645		212		5,203		128,654
U.S. Treasury obligations		2,342		—		38		2,304
Total	$	172,159	$	212	$	6,676	$	165,695
December 25, 2021
Money market investments	$	8,750	$	—	$	—	$	8,750
Asset-backed securities		22,441		—		346		22,095
Corporate bonds and direct obligations of government agencies		137,916		1,406		966		138,356
U.S. Treasury obligations		2,342		50		—		2,392
Total	$	171,449	$	1,456	$	1,312	$	171,593

Schedule of Unrealized Loss on Available-for-Sale Investments

For those available-for-sale investments with unrealized losses at March 26, 2022 and December 25, 2021, the following table summarizes the duration of the unrealized loss (in thousands):

	Less than 12 months				12 months or longer				Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
March 26, 2022
Asset-backed securities	$	19,824	$	1,435	$	—	$	—	$	19,824	$	1,435
Corporate bonds and direct obligations of government agencies		96,962		4,768		4,147		435		101,109		5,203
U.S. Treasury obligations		2,304		38		—		—		2,304		38
Total	$	119,090	$	6,241	$	4,147	$	435	$	123,237	$	6,676
December 25, 2021
Asset-backed securities	$	22,095	$	346	$	—	$	—	$	22,095	$	346
Corporate bonds and direct obligations of government agencies		72,526		966		—		—		72,526		966
Total	$	94,621	$	1,312	$	—	$	—	$	94,621	$	1,312