Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 47,897,000	$ 45,773,000
Less accumulated depreciation	(30,429,000)	(27,620,000)
Property, plant and equipment, net	17,468,420	18,153,152
Land [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	3,099,000	3,107,000
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	9,422,000	8,523,000
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	28,985,000	28,728,000
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	5,225,000	3,490,000
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,166,000	$ 1,925,000
Minimum [Member] | Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years
Minimum [Member] | Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Minimum [Member] | Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Maximum [Member] | Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Maximum [Member] | Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	15 years
Maximum [Member] | Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years