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Consolidated Statements Of Cash Flows (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Cash flows from operating activities:    
Net income $ 2,855,421 $ 3,622,466
Adjustments to reconcile net income to net cash flows from operating activities, net of acquisition:    
Depreciation and amortization 2,336,794 2,118,282
Loss (gain) on sale of investments, net 29,256 (250,480)
Loss on disposition of equipment 20,135  
Impairment of investments 36,032  
Deferred income taxes 68,217 (96,918)
Treasury stock issued for compensation   154,245
Bad debt expense 48,240 17,754
(Increase) decrease in operating assets:    
Accounts receivable (1,494,790) (811,292)
Other receivables (119,524) (54,922)
Inventories (969,101) (682,398)
Refundable income taxes 865,432 402,230
Prepaid expenses and other current assets 78,685 (117,618)
Increase (decrease) in operating liabilities:    
Accounts payable 202,758 1,419,479
Accrued expenses 84,466 (104,885)
Net cash provided by operating activities 4,042,021 5,615,943
Cash flows from investing activities:    
Purchases of investments (2,434,340) (2,161,552)
Proceeds from sale of investments 1,810,816 5,669,158
Investments in certificates of deposits (50,000)  
Proceeds from redemption of certificates of deposit   402,005
Purchases of property and equipment (1,439,133) (2,229,274)
Acquisition of the assets of First Juice   (270,000)
Net cash (used in) provided by investing activities (2,112,657) 1,410,337
Cash flows from financing activities:    
Proceeds from note payable 2,000,000 250,000
Checks written in excess of bank balances (749,170) 998,234
Purchases of treasury stock (1,181,428) (2,666,288)
Repayment of notes payable (4,113,555) (3,008,694)
Net cash used in financing activities (4,044,153) (4,426,748)
Net (decrease) increase in cash and cash equivalents (2,114,789) 2,599,532
Cash and cash equivalents at the beginning of the period 3,229,939 630,407
Cash and cash equivalents at the end of the period $ 1,115,150 $ 3,229,939