Company and Basis of Consolidation	6 Months Ended
Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Company and Basis of Consolidation	Note 1 – Company and Basis of Consolidation Blonder Tongue Laboratories, Inc. (together with its consolidated subsidiaries, the "Company") is a technology-development and manufacturing company that delivers television signal encoding, transcoding, digital transport, and broadband product solutions to the cable markets the Company serves, including the multi-dwelling unit market, the lodging/hospitality market and the institutional market, including hospitals, prisons and schools, primarily throughout the United States and Canada. The consolidated financial statements include the accounts of Blonder Tongue Laboratories, Inc. and its wholly-owned subsidiaries. Significant intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements as of June 30, 2019 and for the three and six months ended June 30, 2019 and 2018 have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission ("SEC"). The accompanying unaudited condensed consolidated financial statements include all adjustments, consisting primarily of normal recurring adjustments, which the Company considers necessary for a fair presentation of the condensed consolidated financial position, operating results, changes in stockholders' equity and cash flows for the periods presented. The condensed consolidated balance sheet at December 31, 2018 has been derived from audited consolidated financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP for complete financial statements have been condensed or omitted pursuant to SEC rules and regulations. The accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2018 and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2018, which was filed with the SEC on April 1, 2019. The results of the three and six months ended June 30, 2019 are not necessarily indicative of results to be expected for the year ending December 31, 2019 or for any future interim period.

Company and Basis of Consolidation

6 Months Ended

Jun. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1 – Company and Basis of Consolidation

Blonder Tongue Laboratories, Inc. (together with its consolidated subsidiaries, the "Company") is a technology-development and manufacturing company that delivers television signal encoding, transcoding, digital transport, and broadband product solutions to the cable markets the Company serves, including the multi-dwelling unit market, the lodging/hospitality market and the institutional market, including hospitals, prisons and schools, primarily throughout the United States and Canada. The consolidated financial statements include the accounts of Blonder Tongue Laboratories, Inc. and its wholly-owned subsidiaries. Significant intercompany balances and transactions have been eliminated in consolidation.

The accompanying unaudited condensed consolidated financial statements as of June 30, 2019 and for the three and six months ended June 30, 2019 and 2018 have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission ("SEC"). The accompanying unaudited condensed consolidated financial statements include all adjustments, consisting primarily of normal recurring adjustments, which the Company considers necessary for a fair presentation of the condensed consolidated financial position, operating results, changes in stockholders' equity and cash flows for the periods presented. The condensed consolidated balance sheet at December 31, 2018 has been derived from audited consolidated financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP for complete financial statements have been condensed or omitted pursuant to SEC rules and regulations. The accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2018 and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2018, which was filed with the SEC on April 1, 2019. The results of the three and six months ended June 30, 2019 are not necessarily indicative of results to be expected for the year ending December 31, 2019 or for any future interim period.