Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net earnings (loss)	$ (7,676)	$ (72,938)
Adjustment for non-cash items:
Depreciation and amortization	147,008	139,358
Stock-based compensation	4,709	8,928
Deferred income taxes	(23,627)	39,000
Change in operating assets and liabilities:
Accounts receivable	75,207	(542,776)
Inventories	283,761	674,613
Prepaid expenses and other current assets	(424,953)	(298,783)
Other assets	0	(23,442)
Accounts payable and accrued liabilities	113,807	(767,714)
Deferred revenue	(713,885)	(339,077)
Net cash provided by (used in) operating activities	(545,649)	(1,182,831)
Cash flows from investing activities:
Purchase of property and equipment	0	(16,709)
Net cash used in investing activities	0	(16,709)
Cash flows from financing activities:
Payments of long-term obligations	(47,755)	(44,204)
Net cash used in financing activities	(47,755)	(44,204)
Effect of exchange rate changes on cash flows	38,308	(29,961)
Net increase (decrease) in cash and cash equivalents	(555,096)	(1,273,705)
Cash and cash equivalents, beginning of period	3,896,087	3,858,544
Cash and cash equivalents, end of period	$ 3,340,991	$ 2,584,839