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Consolidated Statements of Cash Flows (Unaudited) (USD $)
6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 2,226,932 $ 2,009,223
Income from discontinued operations   536
[IncomeLossFromContinuingOperations] 2,226,932 2,008,687
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 497,351 471,410
Loss on disposal or abandonment of assets 79,035 8,553
Non-cash stock-based compensation 26,030 18,388
Deferred income taxes 232,119 (82,823)
Other 117,789 (52,842)
Net changes in assets and liabilities, net of effect of business acquisitions:    
Accounts receivable-trade, net (99,985) (195,779)
Inventory (24,219) (1,244,465)
Income taxes (611,129) (406,926)
Other current assets (298,022) (1,063,029)
Accounts payable-trade 250,374 517,249
Accrued expenses and other liabilities (1,867,753) 383,085
Total adjustments (1,698,410) (1,647,179)
Net cash provided by continuing operating activities 528,522 361,508
Cash provided from discontinued operations   6,831
Net cash provided by operating activities 528,522 368,339
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of property and equipment (497,485) (238,756)
Purchase of certificates of deposit   (2,572,593)
Proceeds from maturities of certificates of deposit 645,252 5,086,000
Proceeds from sale of assets 25,473 6,560
Decrease (increase) in other assets 2,841 (1,612)
Net cash provided by investing activities 176,081 2,279,599
CASH FLOWS FROM FINANCING ACTIVITIES:    
Payments on notes payable and long-term debt (101,250) (101,250)
Repurchase of common stock (treasury stock)   (8,419)
Proceeds from issuance of common stock   166,466
Net cash (used in) provided by financing activities (101,250) 56,797
NET INCREASE IN CASH 603,353 2,704,735
CASH, beginning of period 4,293,746 7,891,962
CASH, end of period 4,897,099 10,596,697
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Interest paid during the period 124,135 131,219
Income tax paid during the period, net of (refunds) $ 1,471,101 $ 1,405,089