Note 5 - Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,
	2016			2015
Land	$	4,485,000		$	4,485,000
Buildings, improvements and leaseholds		19,140,000			16,601,000
Machinery, equipment and fixtures		48,840,000			43,791,000
		72,465,000			64,877,000
Accumulated depreciation and amortization		(44,932,000	)		(42,353,000	)
	$	27,533,000		$	22,524,000