Note 7 - Debt (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Jun. 30, 2013	Dec. 31, 2012	Dec. 22, 2011
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)				$ 4.5
Line of Credit Facility, Commitment Fee Percentage	1.00%
Line of Credit Facility, Amount Outstanding (in Dollars)	1.2		1.6
Convertible Debt (in Dollars)	1.75		1.50
Convertible Debt To be Received (in Dollars)		2
Termination before First Year, Percentage [Member] | Termination Penalty in Percentage [Member]
Line of Credit Facility, Description	3%
Termination before Second Year, Percentage [Member] | Termination Penalty in Percentage [Member]
Line of Credit Facility, Description	2%
Termination before Third Year, Percentage [Member] | Termination Penalty in Percentage [Member]
Line of Credit Facility, Description	1%
Maximum [Member]
Convertible Debt (in Dollars)	$ 3.80
Convertible Debt [Member]
Debt Instrument, Convertible, Conversion Price (in Dollars per share)	$ 0.23
Percentage of Receivables [Member]
Line of Credit Facility, Collateral	85%
Percentage of Inventory, Lower of Cost or Market Value [Member]
Line of Credit Facility, Collateral	50%
Inventory, Maximum Value in Thousands [Member]
Line of Credit Facility, Collateral	$250
Borrowing on Accounts Receivable [Member]
Line of Credit Facility, Interest Rate Description	8.5%
Borrowing on Inventories [Member]
Line of Credit Facility, Interest Rate Description	10.0%
Borrowing on Overdrafts [Member]
Line of Credit Facility, Interest Rate Description	13.0%
Agreement Term in Years [Member]
Line of Credit Facility, Description	three