Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	45,773,000	$ 41,711,000
Less accumulated depreciation	(27,620,000)	(26,770,000)
Property, plant and equipment, net	18,153,152	14,941,492
Land [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	3,107,000	3,116,000
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	8,523,000	8,528,000
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	28,728,000	25,408,000
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	3,490,000	4,042,000
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,925,000	$ 617,000
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