Inventories (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Classification of inventories [Abstract]
Raw materials	$ 1,524,000	$ 1,408,000
Work in process	1,518,000	1,306,000
Finished goods	1,008,000	924,000
Total Inventories, net	$ 4,050,000	$ 3,638,000
Inventory reserve for obsolescence			$ 2,793,000	$ 2,773,000