Segments and Geographic Area (Summary of Segment Information) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 segment	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Number of operating segments									2
Net sales	$ 6,000	$ 7,000	$ 7,000	$ 6,000	$ 7,000	$ 7,000	$ 7,000	$ 7,000	$ 25,160,172	$ 28,447,967	$ 28,157,010
Depreciation and amortization									584,737	506,583	539,289
Operating profit (loss)									(463,593)	(70,885)	1,043,771
Capital expenditures									805,385	350,414	163,269
Total assets	18,014,421				18,825,746				18,014,421	18,825,746	18,344,000
Nutritional Products [Member]
Segment Reporting Information [Line Items]
Number of products									100
Net sales									18,837,000	21,588,000	21,613,000
Depreciation and amortization									511,000	436,000	458,000
Operating profit (loss)									(716,000)	(248,000)	675,000
Capital expenditures									805,000	350,000	163,000
Total assets	15,011,000				16,048,000				15,011,000	16,048,000	15,529,000
Medical Products [Member]
Segment Reporting Information [Line Items]
Number of products									40
Net sales									6,324,000	6,860,000	6,544,000
Depreciation and amortization									74,000	70,000	81,000
Operating profit (loss)									252,000	177,000	369,000
Capital expenditures									0	0	0
Total assets	$ 3,003,000				$ 2,777,000				$ 3,003,000	$ 2,777,000	$ 2,815,000