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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 2,258,997 $ 3,341,912
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 929,408 831,793
(Gain) / loss on disposal or abandonment of assets 515 (6,560)
Non-cash stock-based compensation 171,160 113,302
Deferred income taxes (147,345) (4,676)
Foreign currency translation 627,609 256,309
Net changes in assets and liabilities:    
Accounts receivable-trade 63,667 1,382
Inventory (4,149,949) (2,720,056)
Prepaid expenses 130,098 (108,971)
Other current assets (256) (62,788)
Accounts payable-trade (137,841) (589,863)
Accrued expenses and other liabilities (1,465,374) (1,066,056)
Income taxes payable 508,900 (216,328)
Total adjustments (3,469,408) (3,572,512)
Net cash used in operating activities (1,210,411) (230,600)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of property and equipment (1,004,906) (898,007)
Proceeds from sale of assets 100 26,703
Decrease in other assets (29,121) 352
Net cash used in investing activities (1,033,927) (870,952)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from notes payable and long term debt 3,660,505
Payments on capital lease obligations (6,710)
Repurchase of common stock (treasury stock) (3,675,654)
Proceeds from exercise of stock options 223,404
Net cash provided by (used in) financing activities 223,404 (21,859)
NET DECREASE IN CASH (2,020,934) (1,123,411)
CASH, beginning of period 16,862,304 10,962,615
CASH, end of period 14,841,370 9,839,204
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Interest paid during the period 90,024 65,456
Income tax paid during the period, net of refunds $ 554,670 $ 2,034,036