Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net earnings (loss)	$ (373,034)	$ (129,486)
Adjustment for non-cash items:
Depreciation and amortization	414,594	379,909
Stock-based compensation	28,092	32,170
Deferred income taxes	2,003	(54,414)
(Gain) loss on disposition of equipment	0	(4,969)
Change in operating assets and liabilities:
Accounts receivable	(300,045)	(49,268)
Inventories	892,329	(1,452,945)
Prepaid expenses and other current assets	(310,789)	(20,467)
Other assets	(4,385)	(21,335)
Accounts payable and accrued liabilities	(460,122)	616,095
Deferred revenue	(479,984)	1,372,568
Net cash provided by (used in) operating activities	(591,341)	667,858
Cash flows from investing activities:
Purchase of property and equipment	(169,885)	(102,781)
Proceeds from sale of equipment	0	4,969
Net cash used in investing activities	(169,885)	(97,812)
Cash flows from financing activities:
Payments of long-term obligations	(135,060)	(125,163)
Net cash used in financing activities	(135,060)	(125,163)
Effect of exchange rate changes on cash flows	(45,414)	55,428
Net increase (decrease) in cash and cash equivalents	(941,700)	500,311
Cash and cash equivalents, beginning of period	3,858,544	4,220,152
Cash and cash equivalents, end of period	$ 2,916,844	$ 4,720,463