Basis of Presentation (Policies)	6 Months Ended
Jul. 02, 2024
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited consolidated financial statements include the accounts of BJ’s Restaurants, Inc. (referred to herein as the “Company,” “we,” “us” and “our”) and our wholly owned subsidiaries. The consolidated financial statements presented herein include all material adjustments (consisting of normal recurring adjustments) which are, in the opinion of management, necessary for a fair presentation of our financial condition, results of operations, shareholders’ equity and cash flows for the periods presented. Our consolidated financial statements and accompanying notes have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Certain information and footnote disclosures normally included in consolidated financial statements in accordance with U.S. GAAP have been omitted pursuant to the U.S. Securities and Exchange Commission (“SEC”) rules. The preparation of financial statements in conformity with U.S. GAAP requires us to make certain estimates and assumptions for the reporting periods covered by the financial statements. These estimates and assumptions affect the reported amounts of assets, liabilities, revenues and expenses. Actual amounts could differ from these estimates. Our operating results for the twenty-six weeks ended July 2, 2024 may not be indicative of operating results for the entire year. A description of our accounting policies and other financial information is included in our audited consolidated financial statements filed with the SEC on Form 10-K for the fiscal year ended January 2, 2024. The disclosures included in our accompanying interim consolidated financial statements and footnotes should be read in conjunction with our consolidated financial statements and notes thereto included in the Annual Report on Form 10-K and our other reports filed from time to time with the Securities and Exchange Commission.
Net (Loss) Income Per Share	Basic and diluted net income per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. The number of diluted shares reflects the potential dilution that could occur if holders of in-the-money options and warrants were to exercise their right to convert these instruments into common stock and the restrictions on restricted stock units (“RSUs”) were to lapse. Additionally, performance-based RSUs are considered contingent shares; therefore, at each reporting date we determine the probable number of shares that will vest and include these contingently issuable shares in our diluted share calculation unless they are anti-dilutive. Once these performance-based RSUs vest, they are included in our basic net income per share calculation.

Basis of Presentation (Policies)

6 Months Ended

Jul. 02, 2024

The accompanying unaudited consolidated financial statements include the accounts of BJ’s Restaurants, Inc. (referred to herein as the “Company,” “we,” “us” and “our”) and our wholly owned subsidiaries. The consolidated financial statements presented herein include all material adjustments (consisting of normal recurring adjustments) which are, in the opinion of management, necessary for a fair presentation of our financial condition, results of operations, shareholders’ equity and cash flows for the periods presented. Our consolidated financial statements and accompanying notes have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Certain information and footnote disclosures normally included in consolidated financial statements in accordance with U.S. GAAP have been omitted pursuant to the U.S. Securities and Exchange Commission (“SEC”) rules.

The preparation of financial statements in conformity with U.S. GAAP requires us to make certain estimates and assumptions for the reporting periods covered by the financial statements. These estimates and assumptions affect the reported amounts of assets, liabilities, revenues and expenses. Actual amounts could differ from these estimates. Our operating results for the twenty-six weeks ended July 2, 2024 may not be indicative of operating results for the entire year.

A description of our accounting policies and other financial information is included in our audited consolidated financial statements filed with the SEC on Form 10-K for the fiscal year ended January 2, 2024. The disclosures included in our accompanying interim consolidated financial statements and footnotes should be read in conjunction with our consolidated financial statements and notes thereto included in the Annual Report on Form 10-K and our other reports filed from time to time with the Securities and Exchange Commission.

Net (Loss) Income Per Share

Basic and diluted net income per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. The number of diluted shares reflects the potential dilution that could occur if holders of in-the-money options and warrants were to exercise their right to convert these instruments into common stock and the restrictions on restricted stock units (“RSUs”) were to lapse. Additionally, performance-based RSUs are considered contingent shares; therefore, at each reporting date we determine the probable number of shares that will vest and include these contingently issuable shares in our diluted share calculation unless they are anti-dilutive. Once these performance-based RSUs vest, they are included in our basic net income per share calculation.