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Condensed Consolidated Statements of Cash Flows (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Cash flows from operating activities:    
Net income $ 409,070 $ 264,913
Adjustment to reconcile net income to cash (used in) provided by operating activities:    
Depreciation and amortization 414,339 454,306
Amortization of debt discount 0 5,042
Change in value of swap agreement 158,090 0
Stock based compensation 21,942 35,003
Provision for losses on accounts receivable 9,754 7,275
Provision for losses on inventories 180,792 51,572
Deferred income taxes 181,909 69,952
Change in assets and liabilities:    
Accounts receivable (269,223) (1,416,729)
Inventories (122,936) (621,125)
Prepaid expenses and other assets (13,615) (465,295)
Trade payables (808,666) 721,348
Accrued liabilities (25,396) 306,682
Net cash provided by (used in) operating activities 136,060 (587,056)
Cash used in investing activities - purchases of property, plant and equipment (213,239) (253,262)
Cash flows from financing activities:    
Change in checks written in excess of bank balance 1,051,948 (83,765)
Net change in revolving line of credit (620,076) 290,175
Proceeds from issuance of long-term debt 0 598,296
Repayment of long-term debt (related parties $297,000 and $227,000) (353,916) (345,536)
Proceeds from exercise of stock options and warrants 0 2,335
Net cash provided by financing activities 77,956 461,505
Effect of exchange rate changes on cash 26,383 17,883
Net increase (decrease) in cash and cash equivalents 27,160 (360,930)
Cash and cash equivalents at beginning of period 338,523 761,874
Cash and cash equivalents at end of period 365,683 400,944
Supplemental disclosure of cash flow information:    
Cash payments for interest 306,767 127,448
Cash payments for taxes 5,000 25,000
Supplemental Disclosure of non-cash investing and financing activity Property, Plant & Equipment acquisitions funded by liabilities $ 49,380 $ 33,550