NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 item	Dec. 31, 2011 item
Accounts Receivable and Allowance for Doubtful Accounts
Allowance for uncollectible accounts	$ 157,000	$ 122,000
Inventories
Raw materials	13,325,525	13,056,955
Work in process	2,704,653	3,202,002
Finished goods	3,108,839	3,880,764
Reserves	(1,474,155)	(1,110,128)
Total	17,664,862	19,029,593
Property, Equipment and Depreciation
Accumulated Depreciation	(17,411,472)	(15,943,094)
Net Property and Equipment	11,566,315	9,083,874
Land
Property, Equipment and Depreciation
Property and equipment	375,000	260,000
Assets Held for Sale
Assets held for sale	12,500	12,500
Building and Leasehold Improvements
Property, Equipment and Depreciation
Property and equipment	8,997,813	6,370,570
Buildings
Property, Equipment and Depreciation
Estimated useful lives	39 years
Assets Held for Sale
Assets held for sale	117,003	244,003
Number of assets held for sale	1	1
Impairment charges recognized	127,000	53,000
Leasehold improvements | Minimum
Property, Equipment and Depreciation
Estimated useful lives	3 years
Leasehold improvements | Maximum
Property, Equipment and Depreciation
Estimated useful lives	15 years
Manufacturing equipment
Property, Equipment and Depreciation
Property and equipment	15,065,683	14,156,261
Manufacturing equipment | Minimum
Property, Equipment and Depreciation
Estimated useful lives	3 years
Manufacturing equipment | Maximum
Property, Equipment and Depreciation
Estimated useful lives	7 years
Office and other equipment
Property, Equipment and Depreciation
Property and equipment	$ 4,539,291	$ 4,240,137
Office and other equipment | Minimum
Property, Equipment and Depreciation
Estimated useful lives	3 years
Office and other equipment | Maximum
Property, Equipment and Depreciation
Estimated useful lives	7 years