Note 1 - The Company	9 Months Ended
Sep. 30, 2013
Disclosure Text Block [Abstract]
Nature of Operations [Text Block]	1. The Company Alpha Pro Tech, Ltd. (“Alpha Pro Tech” or the “Company”) is in the business of protecting people, products and environments. The Company accomplishes this by developing, manufacturing and marketing a line of disposable protective apparel for the cleanroom, the industrial markets and the pharmaceutical markets, a line of building supply products for the new home and re-roofing markets, and a line of infection control products for the medical and dental markets. The Building Supply segment consists of a line of construction weatherization products, such as housewrap and synthetic roof underlayment as well as other woven material. The Disposable Protective Apparel segment consists of a complete line of shoecovers, bouffant caps, coveralls, frocks, lab coats, gowns, hoods and other miscellaneous products. The Infection Control segment consists of a line of face masks and eye shields. The Company’s products are sold under the "Alpha Pro Tech" brand name and under private label, and are predominantly sold in the United States of America (“U.S.”).

Note 1 - The Company

9 Months Ended

Sep. 30, 2013

1. The Company

Alpha Pro Tech, Ltd. (“Alpha Pro Tech” or the “Company”) is in the business of protecting people, products and environments. The Company accomplishes this by developing, manufacturing and marketing a line of disposable protective apparel for the cleanroom, the industrial markets and the pharmaceutical markets, a line of building supply products for the new home and re-roofing markets, and a line of infection control products for the medical and dental markets.

The Building Supply segment consists of a line of construction weatherization products, such as housewrap and synthetic roof underlayment as well as other woven material.

The Disposable Protective Apparel segment consists of a complete line of shoecovers, bouffant caps, coveralls, frocks, lab coats, gowns, hoods and other miscellaneous products.

The Infection Control segment consists of a line of face masks and eye shields.

The Company’s products are sold under the "Alpha Pro Tech" brand name and under private label, and are predominantly sold in the United States of America (“U.S.”).