Inventories (Tables)

3 Months Ended

Mar. 31, 2017

Inventories [Abstract]

Inventories

Inventories consist of approximately the following:

	March 31, 2017		December 31, 2016
Raw materials	$	4,986,000	$	4,483,000
Work-in-process		140,000		462,000
Finished goods		2,485,000		2,290,000
Total inventory	$	7,611,000	$	7,235,000