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Consolidated Statements of Cash Flows (USD $)
6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Operating activities:    
Net income $ 678,641 $ 952,496
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 592,675 610,572
Stock-based compensation 91,884 100,702
Deferred income taxes (81,000) (79,000)
Foreign currency transaction (gain)/loss (10,965) 11,830
(Increase) decrease in accounts receivable 27,097 39,117
(Increase) decrease in inventories 319,462 (759,757)
(Increase) decrease in refundable income taxes (132,510) 23,789
(Increase) decrease in prepaid expenses and other current assets (366,504) (415,618)
(Increase) decrease in other assets 964 7,949
Increase (decrease) in income taxes payable 0 52,674
Increase (decrease) in accounts payable & accrued expenses and other noncurrent liabilities 658,313 1,217,003
Net cash provided by operating activities 1,778,057 1,761,757
Investing activities:    
Proceeds from the sale of property, plant and equipment 0 2,953
Purchase of property, plant and equipment (191,700) (223,401)
Payment of life insurance premiums (252,250) (258,100)
Net cash used in investing activities (443,950) (478,548)
Financing activities:    
Principal payments on long-term borrowings (280,344) (257,079)
Common stock dividends paid (373,572) (247,672)
Purchase of stock for treasury (54,917) 0
Net cash used in financing activities (708,833) (504,751)
Effect of exchange rate changes on cash and cash equivalents 58,737 611
Increase in cash and cash equivalents 684,011 779,069
Cash and cash equivalents at beginning of period 6,331,038 5,760,913
Cash and cash equivalents at end of period $ 7,015,049 $ 6,539,982