Stock-Based Compensation - Stock Option Rollforward (Details) $ / shares in Units, $ in Millions			3 Months Ended		9 Months Ended	12 Months Ended
	Oct. 01, 2020	May 15, 2020 tranche shares	Dec. 30, 2020	Jun. 28, 2020 $ / shares shares	Dec. 27, 2020 $ / shares shares	Mar. 28, 2021 USD ($) $ / shares shares
Outstanding Options
Unvested options, beginning of period (in shares)				465,374	465,374	465,374
Options Granted (in shares)					225,000
Options Forfeited/Cancelled (in shares)					(95,125)
Options Vested (in shares)					(165,188)
Unvested options, end of period (in shares)					430,061
Weighted Average Fair Value at Grant Date (per unit)
Unvested options, beginning of period (in dollars per share) | $ / shares				$ 2.38	$ 2.38	$ 2.38
Options Granted (in dollars per share) | $ / shares					2.00
Options Forfeited/Cancelled (in dollars per share) | $ / shares					3.52
Options Vested (in dollars per share) | $ / shares					3.28
Unvested options, end of period | $ / shares					$ 1.58
Stock Options, Vesting Based On Performance, One | Tranche one
Stock Options:
Vesting percentage		25.00%
Vesting period		1 year
Stock Options, Vesting Based On Performance, One | Tranche two
Stock Options:
Monthly percentage of vesting of share based compensation		2.78%
Additional vesting period after the initial period		3 years
Stock Options, Vesting Based On Performance, Two
Stock Options:
Number of vesting milestones | tranche		2
Stock Options, Vesting Based On Performance, Two | Tranche one
Stock Options:
Vesting percentage		50.00%
Stock Options, Vesting Based On Performance, Two | Tranche two
Stock Options:
Vesting percentage		50.00%
Grant Fiscal Year 2021
Outstanding Options
Options Granted (in shares)					225,000
Weighted Average Fair Value at Grant Date (per unit)
Options Granted (in dollars per share) | $ / shares					$ 2.00
Grant Fiscal Year 2021 | Stock Options Vesting Based On Service
Outstanding Options
Options Granted (in shares)				160,000
Grant Fiscal Year 2021 | Stock Options Vesting Based On Service | Tranche one
Stock Options:
Vesting percentage				25.00%
Vesting period				1 year
Grant Fiscal Year 2021 | Stock Options Vesting Based On Service | Tranche two
Stock Options:
Monthly percentage of vesting of share based compensation				2.78%
Additional vesting period after the initial period				3 years
Grant Fiscal Year 2021 | Stock Options Vesting Based On Performance
Stock Options:
Options cancelled (as a percent)	50.00%
Outstanding Options
Options Granted (in shares)		65,000
Grant Fiscal Year 2021 | Stock Options Vesting Based On Performance | Forecast
Stock Options:
Stock-based compensation (in dollars) | $						$ 0.0
Options cancelled (as a percent)			50.00%