Company and Basis of Consolidation	3 Months Ended
Mar. 31, 2018
Company and Basis of Consolidation [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 accounts and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements as of March 31, 2018 and for the three months then ended 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”) and on the same basis as the Company prepares its annual audited consolidated financial statements. 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 and cash flows for the periods presented. The condensed consolidated balance sheet at December 31, 2017 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, 2017, and notes thereto included in the Company’s annual report on Form 10-K, which was filed with the SEC on April 2, 2018. The results of the three months ended March 31, 2018 are not necessarily indicative of results to be expected for the year ending December 31, 2018 or for any future interim period.

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 accounts and transactions have been eliminated in consolidation.

The accompanying unaudited condensed consolidated financial statements as of March 31, 2018 and for the three months then ended 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”) and on the same basis as the Company prepares its annual audited consolidated financial statements. 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 and cash flows for the periods presented. The condensed consolidated balance sheet at December 31, 2017 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, 2017, and notes thereto included in the Company’s annual report on Form 10-K, which was filed with the SEC on April 2, 2018. The results of the three months ended March 31, 2018 are not necessarily indicative of results to be expected for the year ending December 31, 2018 or for any future interim period.