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Stockholders’ Equity and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 25, 2021

Equity [Abstract]

Schedule of Non-vested Restricted Stock Activity

 Schedule of Non-vested Restricted Stock Activity

		Shares				Weighted Average Grant Fair Value
Balance at December 28, 2019			1,863,124			$	1.60
Granted			2,381,000				1.42
Forfeited			(153,595	)			1.71
Vested			(1,038,655	)			0.96
Balance at December 26, 2020			3,051,874				1.67
Granted			2,247,343				3.46
Forfeited			(1,654,666	)			2.03
Vested			(1,566,959	)			2.23
Balance at December 25, 2021			2,077,592			$	2.90

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

 Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

Expected volatility			94.2	%
Interest rate			0.2	%
Expected life (years)			0.7
Dividend yield			—	%

Schedule of Stock-based Compensation Expense

The following table summarizes stock-based compensation expense within each of the categories below as it relates to non-vested restricted common stock awards for the fiscal years 2021, 2020 and 2019 (no tax benefits were recognized):

 Schedule of Stock-based Compensation Expense

		2021				2020				2019
Cost of product revenues		$	211,362			$	113,517			$	102,629
Research and development			576,193				204,599				295,872
Selling, general and administrative			3,629,867				503,006				1,658,899
Total		$	4,417,422			$	821,122			$	2,057,400

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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