Note 6 - Credit Facility (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2012
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	1,500,000
Letters of Credit Outstanding, Amount	230,000
Line of Credit Facility, Amount Outstanding	9,995,000	11,810,000	7,563,000
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	4,200,000
Includes Revolver and Letters of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 35,000,000