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Consolidated Statements Of Cash Flows (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Cash flows from operating activities: |  |
Net income | $ 2,365,639 | $ 1,094,989
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 571,967 | 587,750
Loss (gain) on sale of investments, net | (64,335) | (17,985)
Deferred income taxes | (192,090) | (185,805)
Bad Debt Expense | 51,819 | 6,384
(Increase) decrease in operating assets: |  |
Accounts receivable | (3,244,063) | (526,979)
Other receivables | 3,660 | 68,267
Inventories | (1,141,713) | (250,982)
Refundable income taxes | 0 | 41,316
Prepaid expenses and other current assets | 4,311 | 39,750
Increase (decrease) in operating liabilities: |  |
Accounts payable | 2,209,076 | 211,227
Accrued expenses | 42,206 | 201,462
Income taxes payable | 208,282 | 279,402
Net cash provided by operating activities | 814,759 | 1,548,796
Cash flows from investing activities: |  |
Purchases of investments | (1,271,516) | (318,123)
Proceeds from sale of investments | 1,170,271 | 404,028
Redemption of certificates of deposits | 200,000 | 0
Purchases of property and equipment | (324,608) | (231,243)
Net cash used in investing activities | (225,853) | (145,338)
Cash flows from financing activities: |  |
Checks written in excess of bank balances | 0 | (258,594)
Purchases of treasury stock | 0 | (176,606)
Repayment of notes payable | (135,175) | (926,869)
Net cash used in financing activities | (135,175) | (1,362,069)
Net (decrease) increase in cash and cash equivalents | 453,731 | 41,389
Cash and cash equivalents at the beginning of the period | 2,286,226 | 1,115,150
Cash and cash equivalents at the end of the period | $ 2,739,957 | $ 1,156,539

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