LEASE COMMITMENTS (Operating Leases - Narrative) (Details)						12 Months Ended		24 Months Ended
	Mar. 03, 2018 USD ($)	Oct. 01, 2017 USD ($) item	Apr. 30, 2015 USD ($) a	Dec. 01, 2014 USD ($) extension	Mar. 02, 2014 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Feb. 28, 2014 USD ($)	Aug. 31, 2015
Operating Leased Assets [Line Items]
Lease term	5 years
Monthly rent expense, gross	$ 600
Rent expense, gross						$ 648,500	$ 770,700
Affiliated Entity, LK Property Investments, LLC [Member]
Operating Leased Assets [Line Items]
Monthly rental payments			$ 3,000
Termination notice period			90 days
Reimbursement percentage of property taxes			40.00%
Affiliated Entity, LK Property Investments, LLC [Member] | ISA Real Estate LLC [Member]
Operating Leased Assets [Line Items]
Number of acres | a			4.4
Facility [Member] | Louisville, Kentucky [Member] | K and R, LLC [Member]
Operating Leased Assets [Line Items]
Monthly rent expense, gross						$ 53,800
Facility [Member] | Louisville, Kentucky [Member] | Grade Lane 7100, LLC [Member]
Operating Leased Assets [Line Items]
Lease term		7 years
Monthly rent expense, gross		$ 37,500
Number of additional consecutive terms to extend the lease | item		2
Description of leasing arrangements		For each of the following one year periods, the annual rent increases the lesser of (a) the percentage change in the CPI over the preceding twelve months, or (b) 2% of the previous year's annual rent.
Lease renewal, option period		5 years
Facility [Member] | Seymour, Indiana [Member]
Operating Leased Assets [Line Items]
Lease term				3 years
Number of lease extensions | extension				3
Monthly rent expense, gross				$ 8,200
Lease renewal, option period				3 years
Monthly rent, increase				$ 200
Lot [Member] | Louisville, Kentucky [Member]
Operating Leased Assets [Line Items]
Lease term									19 months
Monthly rent expense, gross					$ 3,800			$ 3,500