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Consolidated Statements Of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Cash flows from operating activities: |  |
Net income | $ 5,619,798 | $ 2,855,421
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 2,384,411 | 2,336,794
Loss (gain) on sale of investments, net | (71,286) | 29,256
Loss on disposition of equipment | 11,169 | 20,135
Impairment of investments | 0 | 36,032
Deferred income taxes | (434,896) | 68,217
Bad debt expense | 435,344 | 48,240
(Increase) decrease in operating assets: |  |
Accounts receivable | (1,213,253) | (1,494,790)
Other receivables | 215,379 | (119,524)
Inventories | (984,711) | (969,101)
Refundable income taxes | (43,512) | 865,432
Prepaid expenses and other current assets | (17,508) | 78,685
Increase (decrease) in operating liabilities: |  |
Accounts payable | (129,514) | 202,758
Accrued expenses | 601,952 | 84,466
Income taxes payable | 254,311 | 0
Net cash provided by operating activities | 6,627,684 | 4,042,021
Cash flows from investing activities: |  |
Purchases of investments | (1,452,672) | (2,434,340)
Proceeds from sale of investments | 1,475,730 | 1,810,816
Investments in certificates of deposits | (150,255) | (50,000)
Purchases of property and equipment | (1,428,717) | (1,439,133)
Net cash used in investing activities | (1,555,914) | (2,112,657)
Cash flows from financing activities: |  |
Proceeds of note payable | 250,000 | 2,000,000
Checks written in excess of bank balances | (592,040) | (749,170)
Purchases of treasury stock | (580,708) | (1,181,428)
Dividends paid | (1,146,317) |
Repayment of notes payable | (1,831,626) | (4,113,555)
Net cash used in financing activities | (3,900,691) | (4,044,153)
Net (decrease) increase in cash and cash equivalents | 1,171,079 | (2,114,789)
Cash and cash equivalents at the beginning of the period | 1,115,150 | 3,229,939
Cash and cash equivalents at the end of the period | $ 2,286,226 | $ 1,115,150

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