Business Operations	12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BUSINESS OPERATIONS	1. BUSINESS OPERATIONS ImmuCell Corporation (the “Company”, “we”, “us”, “our”) was originally incorporated in Maine in 1982 and reincorporated in Delaware in 1987, in conjunction with our initial public offering of common stock. We are an animal health company whose purpose is to create scientifically-proven and practical products that improve the health and productivity of dairy and beef cattle. We manufacture and market the First Defense^® product line for the prevention of scours in newborn dairy and beef calves. We are developing improved formulations of this product line providing Immediate Immunity™ to newborn calves and are in the late stages of developing Re-Tain™, a treatment for cows with subclinical mastitis, the most significant cause of economic loss to the dairy industry. These products help reduce the need to use traditional antibiotics in food producing animals. We are subject to certain risks associated with this stage of development including dependence on key individuals and third-party providers of critical goods and services, competition from other larger companies, the successful sale of existing products and the development and acquisition of additional commercially viable products with appropriate regulatory approvals, where applicable. The global COVID-19 pandemic has created, and continues to create, a great deal of uncertainty for us. The full impact of this viral outbreak on the global economy, and the duration of such impact, is very uncertain at this time. A combination of the conditions, trends and concerns could have a corresponding negative effect on our business and operations, including the supply of the colostrum we purchase to produce our First Defense^® product line, the demand for our products in the U.S. market and our ability to penetrate or maintain a profitable presence in international markets. We could experience shortages in key components and needed products, backlogs and production slowdowns due to difficulties accessing needed supplies and labor and other restrictions affecting our ability to consistently deliver our products to market. Despite our best efforts and intentions, there is a risk that an employee could become infected and could infect others. This could lead to plant shutdowns and production interruptions and have other negative economic and health and safety impacts.

Business Operations

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. BUSINESS OPERATIONS

ImmuCell Corporation (the “Company”, “we”, “us”, “our”) was originally incorporated in Maine in 1982 and reincorporated in Delaware in 1987, in conjunction with our initial public offering of common stock. We are an animal health company whose purpose is to create scientifically-proven and practical products that improve the health and productivity of dairy and beef cattle. We manufacture and market the First Defense^® product line for the prevention of scours in newborn dairy and beef calves. We are developing improved formulations of this product line providing Immediate Immunity™ to newborn calves and are in the late stages of developing Re-Tain™, a treatment for cows with subclinical mastitis, the most significant cause of economic loss to the dairy industry. These products help reduce the need to use traditional antibiotics in food producing animals. We are subject to certain risks associated with this stage of development including dependence on key individuals and third-party providers of critical goods and services, competition from other larger companies, the successful sale of existing products and the development and acquisition of additional commercially viable products with appropriate regulatory approvals, where applicable.

The global COVID-19 pandemic has created, and continues to create, a great deal of uncertainty for us. The full impact of this viral outbreak on the global economy, and the duration of such impact, is very uncertain at this time. A combination of the conditions, trends and concerns could have a corresponding negative effect on our business and operations, including the supply of the colostrum we purchase to produce our First Defense^® product line, the demand for our products in the U.S. market and our ability to penetrate or maintain a profitable presence in international markets. We could experience shortages in key components and needed products, backlogs and production slowdowns due to difficulties accessing needed supplies and labor and other restrictions affecting our ability to consistently deliver our products to market. Despite our best efforts and intentions, there is a risk that an employee could become infected and could infect others. This could lead to plant shutdowns and production interruptions and have other negative economic and health and safety impacts.