Basis of Presentation	9 Months Ended
Sep. 30, 2020
Basis of Presentation [Line Items]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1 – Basis of Presentation As used in this report, “Trans-Lux,” the “Company,” “we,” “us,” and “our” refer to Trans-Lux Corporation and its subsidiaries. Financial information included herein is unaudited, however, such information reflects all adjustments (of a normal and recurring nature), which are, in the opinion of management, necessary for the fair presentation of the Condensed Consolidated Financial Statements for the interim periods. The results for the interim periods are not necessarily indicative of the results to be expected for the full year. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (the “SEC”) and therefore do not include all information and footnote disclosures required under accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Financial Statements included herein should be read in conjunction with the Consolidated Financial Statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The Condensed Consolidated Balance Sheet at December 31, 2019 is derived from the December 31, 2019 audited financial statements. The following new accounting pronouncements were adopted in 2020: In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, Intangibles – Goodwill and Other (Topic 350). ASU 2017-04 simplifies the test for goodwill impairment. As required by this standard, the Company adopted ASU 2018-07 on January 1, 2020. The adoption of this standard did not have a material effect on the Company’s consolidated financial position and results of operations. Other than the foregoing changes, there have been no material changes in our significant accounting policies during the nine months ended September 30, 2020 from the significant accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2019, which was filed with the SEC on March 20, 2020. The following new accounting pronouncements, and related impacts on adoption, are being evaluated by the Company: In August 2018, the FASB issued ASU 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20). ASU 2018-14 modifies the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. Public business entities should apply the amendments in ASU 2018-14 for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years (i.e., January 1, 2021). Early application is permitted. The Company does not expect the adoption of this standard to have a material effect on the Company’s consolidated financial position and results of operations.

Note 1 – Basis of Presentation

As used in this report, “Trans-Lux,” the “Company,” “we,” “us,” and “our” refer to Trans-Lux Corporation and its subsidiaries.

Financial information included herein is unaudited, however, such information reflects all adjustments (of a normal and recurring nature), which are, in the opinion of management, necessary for the fair presentation of the Condensed Consolidated Financial Statements for the interim periods. The results for the interim periods are not necessarily indicative of the results to be expected for the full year. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (the “SEC”) and therefore do not include all information and footnote disclosures required under accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Financial Statements included herein should be read in conjunction with the Consolidated Financial Statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The Condensed Consolidated Balance Sheet at December 31, 2019 is derived from the December 31, 2019 audited financial statements.

The following new accounting pronouncements were adopted in 2020:

In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, Intangibles – Goodwill and Other (Topic 350). ASU 2017-04 simplifies the test for goodwill impairment. As required by this standard, the Company adopted ASU 2018-07 on January 1, 2020. The adoption of this standard did not have a material effect on the Company’s consolidated financial position and results of operations.

Other than the foregoing changes, there have been no material changes in our significant accounting policies during the nine months ended September 30, 2020 from the significant accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2019, which was filed with the SEC on March 20, 2020.

The following new accounting pronouncements, and related impacts on adoption, are being evaluated by the Company:

In August 2018, the FASB issued ASU 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20). ASU 2018-14 modifies the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. Public business entities should apply the amendments in ASU 2018-14 for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years (i.e., January 1, 2021). Early application is permitted. The Company does not expect the adoption of this standard to have a material effect on the Company’s consolidated financial position and results of operations.