Schedule of Segment Information (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Net Sales	$ 19,700,100	$ 19,666,800
Operating Income	645,000	418,400
Identifiable Assets	19,510,700	20,165,800
Depreciation & Amortization	512,300	586,800
Capital Expenditures	(303,100)	(443,200)
North American Operations [Member]
Net Sales	8,569,100	7,964,100
Operating Income	440,600	489,700
Identifiable Assets	11,979,700	12,282,800
Depreciation & Amortization	309,200	319,600
Capital Expenditures	84,500	256,600
Foreign Operations [Member]
Net Sales	11,131,000	11,702,700
Operating Income	204,400	(71,300)
Identifiable Assets	3,697,800	4,732,800
Depreciation & Amortization	203,100	267,200
Capital Expenditures	218,600	186,600
Corporate And Others [Member]
Net Sales
Operating Income
Identifiable Assets	3,833,200	3,150,200
Depreciation & Amortization
Capital Expenditures