Business Description and Summary of Significant Accounting Policies (Detail Textuals) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 78,000		$ 77,000
Inventory reserve	1,526,000		1,513,000
Interest paid	22,000	$ 18,000
Reclassification of deferred tax liability from current to noncurrent	$ 661,000		$ 661,000