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CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Operating activities    
Net income (loss) $ 1,303,031 $ 822,936
Stock compensation expense 23,460 35,191
Depreciation and amortization 268,695 285,177
(Increase) Decrease in deferred tax assets 104,379 0
Changes in non-cash working capital items:    
(Increase) Decrease in accounts receivable (540,159) 109,028
(Increase) Decrease in inventory 64,148 (180,186)
(Increase) Decrease in prepaid expenses (80,000) (183,749)
Increase (Decrease) in accounts payable (263,844) (516,939)
Increase (Decrease) in taxes payable 367,799 309,771
Increase (Decrease) in deferred revenue 0 98,128
Cash provided by (used in) operating activities 1,247,509 779,357
Investing activities    
Long term deposits (350) 0
Acquisition and sale of property and equipment (79,750) 51,901
Cash provided by (used in) investing activities (80,100) 51,901
Financing activities    
Short term line of credit (repayment) 550,000 (350,000)
Repayments of loans (100,597) (100,597)
Repurchase of common stock (1,575,000) 0
Cash provided (used) by financing activities (1,125,597) (450,597)
Effect of exchange rate changes on cash 40,096 (2,573)
Inflow of cash 81,908 378,088
Cash and cash equivalents, beginning 2,498,738 747,517
Cash and cash equivalents, ending 2,580,646 1,125,605
Supplemental disclosure of cash flow information:    
Income taxes paid 452,654 535,000
Interest paid $ 22,558 $ 32,177