Note 12 - Debt (Detail) (USD $)	1 Months Ended	12 Months Ended
	Nov. 22, 2011	Jun. 12, 2012	Jun. 30, 2012
Line of Credit Facility, Maximum Borrowing Capacity		$ 23,000,000
Debt Instrument, Basis Spread on Variable Rate		1.50%
Line of Credit Facility, Interest Rate During Period		1.68%
Debt Instrument, Face Amount	15,500,000
Debt Instrument, Interest Rate, Stated Percentage	4.50%
Debt Instrument, Periodic Payment	160,640
Line of Credit Facility, Amount Outstanding			15,500,000
Line of Credit Facility, Commitment Fee Percentage			0.25%
Line of Credit Facility, Current Borrowing Capacity			22,800,000
Line of Credit Facility, Remaining Borrowing Capacity			7,300,000
Total Liabilities [Member]
Line of Credit Facility, Covenant Terms		total liabilities cannot exceed 85% of tangible net worth
Capital Expenditures [Member]
Line of Credit Facility, Covenant Terms		annual capital expenditures cannot exceed $15.0 million
Debt Service Coverage Ratio [Member]
Line of Credit Facility, Covenant Terms		maintain a Debt Service Coverage Rate of a minimum of 1.25 to 1
Cash and Liquid Investments [Member]
Line of Credit Facility, Covenant Terms		maintain consolidated cash plus liquid investments of not less than $10.0 million at any time
New Covenant [Member]
Line of Credit Facility, Covenant Terms		the Company will not permit the ratio of funded debt to EBITDA to exceed 1.45 to 1
Three Standby Letters of Credit [Member]
Letters of Credit Outstanding, Amount			$ 200,000