Note 6 - Credit Facility (Detail) (USD $)	6 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Line of Credit Facility, Maximum Borrowing Capacity	$ 35,000,000
Line Of Credit Facility Minimum Excess Availability Requirement	2,700,000
Line Of Credit Facility Amendment Fee Amount	200,000
Line Of Credit Facility Additional Cash Equity	10,000,000
Line of Credit Facility, Remaining Borrowing Capacity	848,000
Letters of Credit Outstanding, Amount	427,000
Line of Credit Facility, Amount Outstanding	10,687,000	11,810,000	15,290,000
Debt Instrument, Basis Spread on Variable Rate	5.75%
Maximum [Member]
Line Of Credit Facility Minimum Excess Availability Requirement	2,000,000
Exclude Minimum Excess Availability Requirement [Member]
Line of Credit Facility, Remaining Borrowing Capacity	3,600,000
Includes Revolver and Letters of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 35,000,000