Revenue: Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 8,555,731	$ 7,645,259	$ 26,225,070	$ 19,325,234
United States
Revenue	7,281,972	6,513,614	21,909,991	16,612,812
Foreign
Revenue	1,273,759	1,131,645	4,315,079	2,712,422
Automotive
Revenue	4,287,542	4,695,138	13,511,053	10,761,097
Nonautomotive
Revenue	4,268,189	2,950,121	12,714,017	8,564,137
Fastener
Revenue	7,552,619	7,024,416	22,843,341	17,275,555
Fastener | United States
Revenue	6,300,067	5,909,756	18,589,576	14,721,327
Fastener | Foreign
Revenue	1,252,552	1,114,660	4,253,765	2,554,228
Fastener | Automotive
Revenue	4,259,544	4,660,451	13,410,100	10,653,621
Fastener | Nonautomotive
Revenue	3,293,075	2,363,965	9,433,241	6,621,934
Assembly Equipment
Revenue	1,003,112	620,843	3,381,729	2,049,679
Assembly Equipment | United States
Revenue	981,905	603,858	3,320,415	1,891,485
Assembly Equipment | Foreign
Revenue	21,207	16,985	61,314	158,194
Assembly Equipment | Automotive
Revenue	27,998	34,687	100,953	107,476
Assembly Equipment | Nonautomotive
Revenue	$ 975,114	$ 586,156	$ 3,280,776	$ 1,942,203