Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 26, 2021	Dec. 27, 2020
Accounts Receivable, allowance for doubtful accounts	$ 2,208	$ 739
Financing Receivable, allowance for doubtful accounts, current	103	103
Financing Receivable, allowance for doubtful accounts, noncurrent	$ 271	$ 271
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)	15,000,000	5,000,000
Preferred stock, issued (in shares)	1,643,272	1,183,272
Preferred stock, outstanding (in shares)	1,643,272	1,183,272
Preferred stock, liquidation preference (in dollars per share)	$ 25	$ 25
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	51,600,000	25,000,000
Common stock, issued (in shares)	16,283,684	11,926,264
Common stock, outstanding (in shares)	16,283,684	11,926,264
Class A Shares
Common stock, authorized (in shares)	50,000,000
Common stock, issued (in shares)	15,013,001	11,926,264
Common stock, outstanding (in shares)	15,013,001
Class B Shares
Common stock, authorized (in shares)	1,600,000
Common stock, issued (in shares)	1,270,683
Common stock, outstanding (in shares)	1,270,683