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Consolidated Statements Of Operations And Comprehensive Income (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Consolidated Statements Of Operations And Comprehensive Income [Abstract] |  |
Net Sales | $ 6,498,000 | $ 6,115,000
Cost of Goods Sold | 2,858,000 | 2,613,000
Gross Profit | 3,640,000 | 3,502,000
Operating Expenses: |  |
Selling and marketing | 1,344,000 | 1,369,000
General and administrative | 1,022,000 | 956,000
Research and development | 443,000 | 437,000
Total Operating Expenses | 2,809,000 | 2,762,000
Operating Income | 831,000 | 740,000
Non-operating Income (Expense): |  |
Gain on sale of investment securities | 794,000 | 73,000
Interest income | 4,000 | 6,000
Loss on disposal of fixed assets | 0 | (18,000)
Other income | 13,000 | 8,000
Total Non-operating Income | 811,000 | 69,000
Income from Continuing Operations Before Income Taxes | 1,642,000 | 809,000
Income Taxes | 556,000 | 211,000
Income before Discontinued Operations | 1,086,000 | 598,000
Loss from Discontinued Operations, Net of Income Taxes | 0 | (50,000)
Net Income | 1,086,000 | 548,000
Other Comprehensive Income: |  |
Change in Unrealized Value of Investments, Net of Tax | 313,000 | 218,000
Total Comprehensive Income | $ 1,399,000 | $ 766,000
Basic |  |
Net income per share continuing operations | $ 0.32 | $ 0.17
Net loss per share discontinued operations | $ 0.00 | $ (0.01)
Net income per share | $ 0.32 | $ 0.16
Weighted average shares | 3,391,332 | 3,387,192
Diluted |  |
Net income per share continuing operations | $ 0.31 | $ 0.17
Net loss per share discontinued operations | $ 0.00 | $ (0.01)
Net income per share | $ 0.31 | $ 0.16
Weighted average shares | 3,412,288 | 3,405,738
Dividends paid per common share | $ 0.16 | $ 0.16

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