Schedule of Valuation and Qualifying Accounts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts
Balance at beginning of year	$ 150,000	$ 150,000
Additions Charged to Expenses	3,824	1,867
Write-offs	(3,824)	(1,867)
Balance at end of year	150,000	150,000
Inventory Valuation Reserve
Balance at beginning of year	618,000	564,000
Additions Charged to Expenses	77,577	134,271
Write-offs	(118,577)	(80,271)
Balance at end of year	$ 577,000	$ 618,000