Basis of Presentation	9 Months Ended
Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Note 1 — Basis of Presentation In the opinion of management, the accompanying condensed consolidated financial statements include all adjustments necessary to present fairly the financial position, results of operations and cash flows of Acme United Corporation (the “Company”). These adjustments are of a normal, recurring nature. However, the financial statements do not include all of the disclosures normally required by accounting principles generally accepted in the United States of America or those normally made in the Company's Annual Report on Form 10-K. Please refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2014 for such disclosures. The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated balance sheet as of that date. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and the financial statements and notes thereto, included in the Company’s 2014 Annual Report on Form 10-K. The Company has evaluated events and transactions subsequent to September 30, 2015 and through the date these condensed consolidated financial statements were included in this Form 10-Q and filed with the SEC. As part of the process of preparing our financial statements on a quarterly basis, the Company estimates its income tax expense. This process involves the estimation of the Company’s current tax exposure based on expected annual results of operations.

Basis of Presentation

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1 — Basis of Presentation

In the opinion of management, the accompanying condensed consolidated financial statements include all adjustments necessary to present fairly the financial position, results of operations and cash flows of Acme United Corporation (the “Company”). These adjustments are of a normal, recurring nature. However, the financial statements do not include all of the disclosures normally required by accounting principles generally accepted in the United States of America or those normally made in the Company's Annual Report on Form 10-K. Please refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2014 for such disclosures. The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated balance sheet as of that date. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations and the financial statements and notes thereto, included in the Company’s 2014 Annual Report on Form 10-K.

The Company has evaluated events and transactions subsequent to September 30, 2015 and through the date these condensed consolidated financial statements were included in this Form 10-Q and filed with the SEC.

As part of the process of preparing our financial statements on a quarterly basis, the Company estimates its income tax expense. This process involves the estimation of the Company’s current tax exposure based on expected annual results of operations.