Fair Value (Tables)

6 Months Ended

Apr. 03, 2020

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis consist of the following (in thousands):

	April 3, 2020
	Fair Value		Active Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets
Money market funds	$	491	$	491	$	—	$	—
Commercial paper	72,360		—		72,360		—
Corporate bonds	28,487		—		28,487		—
Total assets measured at fair value	$	101,338	$	491	$	100,847	$	—
Liabilities
Common stock warrant liability	$	7,804	$	—	$	—	$	7,804
Total liabilities measured at fair value	$	7,804	$	—	$	—	$	7,804

	September 27, 2019
	Fair Value		Active Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets
Money market funds	$	261	$	261	$	—	$	—
Commercial paper	71,629		—		71,629		—
Corporate bonds	29,597		—		29,597		—
Total assets measured at fair value	$	101,487	$	261	$	101,226	$	—
Liabilities
Common stock warrant liability	$	12,364	$	—	$	—	$	12,364
Total liabilities measured at fair value	$	12,364	$	—	$	—	$	12,364

Quantitative information Used in Fair Value Calculation of Level 3 Liabilities

The quantitative information utilized in the fair value calculation of our Level 3 liabilities is as follows:

			Inputs
Liabilities	Valuation Technique	Unobservable Input	April 3, 2020	September 27, 2019
Warrant liability	Black-Scholes model	Volatility	62.1%	61.4%
		Discount rate	0.15%	1.71%
		Expected life	0.7 years	1.2 years
		Exercise price	$14.05	$14.05
		Stock price	$18.55	$21.68
		Dividend rate	—%	—%

Changes in Liabilities with Inputs Classified within Level 3 of Fair Value

The changes in liabilities with inputs classified within Level 3 of the fair value hierarchy consist of the following (in thousands):

	September 27, 2019		Net Realized/Unrealized Losses Included in Earnings			Purchases and Issuances		Sales and Settlements		April 3, 2020
Common stock warrant liability	$	12,364	$	(4,560	)	$	—	$	—	$	7,804

	September 28, 2018		Net Realized/Unrealized Losses (Gains) Included in Earnings			Purchases and Issuances		Sales and Settlements			March 29, 2019
Contingent consideration	$	585	$	65		$	—	$	(650	)	$	—
Common stock warrant liability	$	13,129	$	(3,861	)	$	—	$	—		$	9,268