Intangible Assets and Goodwill

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

4.  Intangible Assets and Goodwill

	December 31,
Intangible assets consisted of:	2017		2016
First Aid Only Tradename, Customer List	$	8,910,010	$	8,910,010
DMT Tradename, Customer List		2,756,000		2,756,000
DMT Non-Compete		183,000		183,000
Patents		2,271,980		2,271,980
Trademarks		663,698		663,698
Pac-Kit Tradename, Customer List		1,500,000		1,500,000
Spill Magic Customer List		3,965,000		—
Spill Magic Trademarks		1,034,000		—
Spill Magic Non-Compete		67,111		—
C-Thru Customer List		1,050,000		1,050,000
Subtotal		22,400,799		17,334,688
Accumulated Amortization		4,518,794		3,346,502
Subtotal Intangible assets		17,882,005		13,988,186
Goodwill		4,696,370		3,948,235
	$	22,578,375	$	17,936,421

Amortization expense for patents and trademarks for the years ended December 31, 2017, and 2016 were $1,172,292 and $930,941, respectively. The estimated aggregate amortization expense for each of the next five succeeding years, calculated on a similar basis, is as follows: 2018 - $1,215,549; 2019 - $1,165,086; 2020 - $1,160,466; 2021 - $1,158,641; and 2022 - $1,141,933.