Inventory (Tables)

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventory is comprised of the following:

	March 31, 2017		December 31, 2016
Raw Materials	$	1,033,000	$	1,028,000
Work In Process		369,000		385,000
Finished Goods		571,000		618,000
Allowance for slow moving and obsolete inventory		(470,000)		(449,000)
	$	1,503,000	$	1,582,000