Revenue from Contracts with Customers (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)
Net sales	$ 137,321,395
Cutting, Sharpening and Measuring
Net sales	80,347,000
First Aid and Safety
Net sales	56,974,000
United States
Net sales	121,245,000
United States | Cutting, Sharpening and Measuring
Net sales	64,271,000
United States | First Aid and Safety
Net sales	56,974,000
Canada
Net sales	6,973,000
Canada | Cutting, Sharpening and Measuring
Net sales	6,973,000
Canada | First Aid and Safety
Net sales	0
Europe
Net sales	9,103,000
Europe | Cutting, Sharpening and Measuring
Net sales	9,103,000
Europe | First Aid and Safety
Net sales	$ 0