Income Taxes - Reconciliation of the Expense (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 26, 2020	Aug. 28, 2019
Amount
Income tax benefit from continuing operations at the federal rate	$ (6,104)	$ (3,098)
Permanent and other differences:
Federal jobs tax credits (wage deductions)	0	89
Stock options and restricted stock	17	19
Other permanent differences	3	31
State income tax, net of federal benefit	189	273
General Business Tax Credits	0	(422)
Other	580	117
Change in valuation allowance	5,672	3,460
Provision for income taxes	$ 357	$ 469
Percent
Income tax benefit from continuing operations at the federal rate	21.00%	21.00%
Permanent and other differences:
Federal jobs tax credits (wage deductions)	0.00%	(0.60%)
Stock options and restricted stock	(0.10%)	(0.10%)
Other permanent differences	0.00%	(0.20%)
State income tax, net of federal benefit	(0.70%)	(1.90%)
General Business Tax Credits	0.00%	2.90%
Other	(1.90%)	(0.80%)
Change in valuation allowance	(19.50%)	(23.50%)
Provision for income taxes from continuing operations	(1.20%)	(3.20%)

Other permanent differences effective income tax rate in taxes.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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