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Consolidated Statements Of Cash Flows (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2010
Cash flows from operating activities:      
Net income $ 2,191,313 $ 2,953,193 $ 3,622,466
Adjustments to reconcile net income to net cash flows from operating activities, net of acquisition:      
Depreciation and amortization 1,159,123 1,036,116 2,118,282
Loss (Gain) on sale of investments, net 2,056 (54,784) (250,480)
Deferred income taxes (156,040) (290,465) (96,918)
Treasury stock issued for compensation   62,317 154,245
Increase in allowance for doubtful accounts 20,000   17,754
(Increase) decrease in operating assets:      
Accounts receivable (2,117,792) (1,780,774) (811,292)
Other receivables 94,855 (92,631) (54,922)
Inventories (1,622,777) (857,743) (682,398)
Refundable income taxes 906,748 1,308,978 402,230
Prepaid expenses and other current assets (41,551) (29,433) (117,618)
Increase (decrease) in operating liabilities:      
Accounts payable (8,646) (504,764) 1,419,479
Accrued expenses 42,599 (82,791) (104,885)
Income taxes payable 378,482 604,323  
Net cash provided by operating activities 848,370 2,271,542 5,615,943
Cash flows from investing activities:      
Purchases of investments (582,697) (538,852) (2,161,552)
Proceeds from sale of investments 532,640 1,502,724 5,669,158
Investments in certificates of deposits (50,000)    
Proceeds from redemption of certificates of deposit   102,545 402,005
Purchases of property and equipment (747,250) (1,292,741) (2,229,274)
Acquisition of the assets of First Juice     (270,000)
Net cash provided by (used in) investing activities (847,307) (226,324) 1,410,337
Cash flows from financing activities:      
Proceeds of note payable 250,000 250,000 250,000
Checks written in excess of bank balances 367,840 504,398 998,234
Purchases of treasury stock (971,798) (1,418,657) (2,666,288)
Repayment of notes payable (1,478,521) (1,152,876) (3,008,694)
Net cash used in financing activities (1,832,479) (1,817,135) (4,426,748)
Net (decrease) increase in cash and cash equivalents (1,831,416) 228,083 2,599,532
Cash and cash equivalents at the beginning of the period 3,229,939 630,407 630,407
Cash and cash equivalents at the end of the period $ 1,398,523 $ 858,490 $ 3,229,939