Short-Term Investments

12 Months Ended

Oct. 03, 2020

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Short-Term Investments

SHORT-TERM INVESTMENTS

We consider all highly liquid investments with maturities of three months or less at the time of purchase to be cash equivalents. Investments classified as available-for-sale are reported at fair value with unrealized gains and losses, net of related income taxes, recorded as a separate component of OCI in stockholders' equity until realized. Interest and amortization of premiums and discounts for debt securities are included in interest income. Gains and losses on securities sold are determined based on the specific identification method and are included in other income (expense).

Cash, cash equivalents and short-term investments consist of the following (in thousands):

	Fiscal 2020 year-end
	Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
Cash and cash equivalents	$	440,258	$	—	$	—	$	440,258
Short-term investments:
Available-for-sale securities:
U.S. Treasury and agency obligations	$	35,311	$	36	$	(1)	$	35,346
Total short-term investments	$	35,311	$	36	$	(1)	$	35,346

	Fiscal 2019 year-end
	Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
Cash and cash equivalents	$	305,833	$	—	$	—	$	305,833
Short-term investments:
Available-for-sale securities:
U.S. Treasury and agency obligations	$	120	$	—	$	—	$	120
Total short-term investments	$	120	$	—	$	—	$	120

There were less than $0.1 million of unrealized gains and losses at October 3, 2020. None of the $1,000 in unrealized losses at October 3, 2020 were considered to be other-than-temporary impairments. There were no unrealized gains or losses at September 28, 2019.

The amortized cost and estimated fair value of available-for-sale investments in debt securities as of October 3, 2020 and September 28, 2019 classified as short-term investments on our consolidated balance sheets, were as follows (in thousands):

	Fiscal year-end
	2020				2019
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Investments in available-for-sale debt securities due in less than one year	$	35,311	$	35,346	$	120	$	120

During fiscal 2020, we received $5,000 in proceeds from the sale of available-for-sale securities and realized no gross gains or losses. During fiscal 2019, we received no proceeds from the sale of available-for-sale securities and realized no gross gains or losses.