Subsequent Events	12 Months Ended
Dec. 26, 2020
Subsequent Events [Abstract]
Subsequent Events	18. Subsequent Events In Q1 2021, we sold 2.4 million shares of common stock for gross proceeds of $16 million (average of $6.66 per share), before deducting broker expenses paid by us of $0.5 million, pursuant to our At-The-Market Equity Offering Sales Agreement dated as of February 8, 2019 with Stifel, Nicolaus & Company, Incorporated, as agent (the “ATM Agreement”). The ATM Agreement has since terminated pursuant to its terms as a result of the sale of all the shares subject to such agreement.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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