Intangible Assets and Goodwill

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

4.  Intangible Assets and Goodwill    

	December 31,
Intangible assets consisted of:	2016		2015
First Aid Only Tradename, Customer List	$	8,910,010	$	8,910,010
DMT Tradename, Customer List		2,756,000		—
DMT Non-Compete		183,000		—
Patents		2,271,980		2,242,844
Trademarks		663,698		663,698
Pac-Kit Tradename, Customer List		1,500,000		1,500,000
C-Thru, Customer List		1,050,000		1,050,000
Subtotal		17,334,688		14,366,552
Accumulated amortization		3,346,502		2,415,561
Subtotal Intangible assets		13,988,186		11,950,991
Goodwill		3,948,235		1,406,000
	$	17,936,421	$	13,356,991

Amortization expense for patents and trademarks for the years ended December 31, 2016, and 2015 were $930,941 and $734,496, respectively. The estimated aggregate amortization expense for each of the next five succeeding years, calculated on a similar basis, is as follows: 2017 - $953,038; 2018 - $932,247; 2019 - $881,785; 2020 - $877,164; and 2021 - $875,339.