Customer Concentrations	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Notes to Financial Statements
Customer Concentrations	(6) Customer Concentrations The Company sells its products primarily through high-volume distributors and retailers, Internet service providers, telephone service providers, value-added resellers, PC system integrators, and original equipment manufacturers ("OEMs"). The Company supports its major accounts in their efforts to discern strategic directions in the market, to maintain appropriate inventory levels, and to offer a balanced selection of attractive products. Relatively few customers have accounted for a substantial portion of the Company’s net sales. In the first quarter of 2013, three customers accounted for 63% of our total net sales. In the first quarter of 2012, three customers accounted for 70% of the Company’s total net sales. The Company’s customers generally do not enter into long-term agreements obligating them to purchase products. The Company may not continue to receive significant revenues from any of these or from other large customers. A reduction or delay in orders from any of the Company’s significant customers, or a delay or default in payment by any significant customer could materially harm the Company’s business and prospects. Because of the Company’s significant customer concentration, its net sales and operating income (loss) could fluctuate significantly due to changes in political or economic conditions, or the loss, reduction of business, or less favorable terms for any of the Company's significant customers.	The Company sells its products primarily through high-volume distributors and retailers, Internet service providers, telephone service providers, value-added resellers, PC system integrators, and original equipment manufacturers ("OEMs"). The Company supports its major accounts in their efforts to discern strategic directions in the market, to maintain appropriate inventory levels, and to offer a balanced selection of attractive products. Relatively few customers have accounted for a substantial portion of the Company’s revenues. In 2012 three customers accounted for 67% of our total net sales and 85% of our gross accounts receivable. During 2011 three customers accounted for 58% of the Company’s total net sales and 72% of gross accounts receivable. The Company’s customers generally do not enter into long-term agreements obligating them to purchase products. The Company may not continue to receive significant revenues from any of these or from other large customers. A reduction or delay in orders from any of the Company’s significant customers, or a delay or default in payment by any significant customer could materially harm the Company’s business and prospects. Because of the Company’s significant customer concentration, its net sales and operating income (loss) could fluctuate significantly due to changes in political or economic conditions, or the loss, reduction of business, or less favorable terms for any of the Company's significant customers.

Customer Concentrations

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

(6) Customer Concentrations

The Company sells its products primarily through high-volume distributors and retailers, Internet service providers, telephone service providers, value-added resellers, PC system integrators, and original equipment manufacturers ("OEMs"). The Company supports its major accounts in their efforts to discern strategic directions in the market, to maintain appropriate inventory levels, and to offer a balanced selection of attractive products.

Relatively few customers have accounted for a substantial portion of the Company’s net sales. In the first quarter of 2013, three customers accounted for 63% of our total net sales. In the first quarter of 2012, three customers accounted for 70% of the Company’s total net sales.

The Company’s customers generally do not enter into long-term agreements obligating them to purchase products. The Company may not continue to receive significant revenues from any of these or from other large customers. A reduction or delay in orders from any of the Company’s significant customers, or a delay or default in payment by any significant customer could materially harm the Company’s business and prospects. Because of the Company’s significant customer concentration, its net sales and operating income (loss) could fluctuate significantly due to changes in political or economic conditions, or the loss, reduction of business, or less favorable terms for any of the Company's significant customers.

Relatively few customers have accounted for a substantial portion of the Company’s revenues. In 2012 three customers accounted for 67% of our total net sales and 85% of our gross accounts receivable. During 2011 three customers accounted for 58% of the Company’s total net sales and 72% of gross accounts receivable.