Note 2 - Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

Allowance for Credit Losses on Financing Receivables [Table Text Block]

	Beginning Balance		Charge Offs		Recoveries		Provision			Ending Balance
2014	$	20,400	$	—	$	—	$	(2,200	)	$	18,200
2013		24,600		—		—		5,000			29,600

	Beginning Balance		Charge Offs		Recoveries		Provision			Ending Balance
2014	$	42,000	$	—	$	—	$	(23,800	)	$	18,200
2013		33,900		—		—		(4,300	)		29,600

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended September 30, 2014			As of September 30, 2014			Three Months Ended September 30, 2013			As of September 30, 2013
Customer	Sales			Accounts Receivable			Sales			Accounts Receivable
Alcatel-Lucent		7.3	%		22.4	%		8.4	%		16.2	%
Centric		4.2	%		10.7	%		4.0	%		3.5	%
Elosoft		5.7	%		12.7	%		10.4	%		15.1	%
G E		17.8	%		4.1	%		9.7	%		16.5	%
IDS		9.3	%		0.0	%		9.9	%		4.5	%
Seagate Technology		7.4	%		2.2	%		1.4	%		2.3	%
Total		51.7	%		52.1	%		43.8	%		58.1	%

	Nine Months Ended September 30, 2014			As of September 30, 2014			Nine Months Ended September 30, 2013			As of September 30, 2013
Customer	Sales			Accounts Receivable			Sales			Accounts Receivable
Alcatel-Lucent		5.3	%		22.4	%		7.5	%		16.2	%
Centric		6.0	%		10.7	%		3.2	%		3.5	%
Elosoft		6.4	%		12.7	%		6.3	%		15.1	%
G E		14.5	%		4.1	%		6.8	%		16.5	%
IDS		7.0	%		0.0	%		6.6	%		4.5	%
Seagate Technology		-	%		-	%		-	%		-	%
Total		39.2	%		49.9	%		30.4	%		55.8	%