SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Enterprise Wide Disclosures and Foreign Currency Transactions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Enterprise-Wide Disclosures
Percentage of sales (as a percent)	10.00%	10.00%
Total Net Sales	$ 112,334,749	$ 116,621,719
Property and equipment, net	10,175,533	10,330,834
Other assets	4,121,801	5,152,944
Foreign Currency Transactions
Foreign currency translation adjustment		56,340
Foreign currency translation loss	100,785	44,445
Net foreign currency transaction gains (losses)	(192,187)	(82,000)
United States
Enterprise-Wide Disclosures
Property and equipment, net	8,712,902	8,731,205
Other assets	4,114,075	5,145,218
Mexico
Enterprise-Wide Disclosures
Property and equipment, net	1,003,040	1,238,087
Other assets	7,726	7,726
China
Enterprise-Wide Disclosures
Property and equipment, net	$ 459,591	$ 361,542
Export sales | Domestic
Enterprise-Wide Disclosures
Percentage of sales (as a percent)	4.50%	8.00%
Aerospace and Defense
Enterprise-Wide Disclosures
Total Net Sales	$ 15,682,635	$ 16,114,759
Medical
Enterprise-Wide Disclosures
Total Net Sales	51,448,581	53,835,916
Industrial
Enterprise-Wide Disclosures
Total Net Sales	$ 45,203,533	$ 46,671,044