Schedule of Segment Information (Details) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Net Sales	$ 29,741,700	$ 30,098,400
Operating Income	858,000	915,400
Identifiable Assets	19,520,800	19,471,800
Depreciation & Amortization	771,200	889,000
Capital Expenditures	546,200	680,500
North American Territory Operations [Member]
Net Sales	12,816,800	12,349,900
Operating Income	486,600	854,100
Identifiable Assets	11,843,700	12,492,300
Depreciation & Amortization	457,500	484,600
Capital Expenditures	223,700	316,700
Foreign Territory Operations [Member]
Net Sales	16,924,900	17,748,500
Operating Income	371,400	61,300
Identifiable Assets	3,984,400	3,967,500
Depreciation & Amortization	313,700	404,400
Capital Expenditures	322,500	363,800
Corporate And Others [Member]
Net Sales
Operating Income
Identifiable Assets	3,692,700	3,012,000
Depreciation & Amortization
Capital Expenditures