Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000896747 (http://www.sec.gov/CIK)

Inventory Disclosure [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	Inventory is comprised of the following:       December 31, 2016   December 31, 2015               Raw Materials   $ 1,028,000   $ 1,208,000   Work In Process     385,000     399,000   Finished Goods     618,000     571,000   Allowance for slow moving and obsolete inventory     (449,000)     (432,000)       $ 1,582,000   $ 1,746,000