Note G - Debt (Details Textual) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)
Line of Credit [Member]
Line of Credit Facility, Remaining Borrowing Capacity	$ 1,689	$ 1,689	$ 1,470
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,689	$ 1,689	$ 1,470
Debt, Weighted Average Interest Rate	5.80%	5.80%	5.40%
Revolving Loan Agreement [Member] | Bank of Montreal [Member]
Line of Credit Facility, Remaining Borrowing Capacity			$ 12,058
Line of Credit Facility, Current Borrowing Capacity			$ 21,571
Line of Credit Facility, Interest Rate at Period End			2.21%
Revolving Loan Agreement [Member] | Wells Fargo Bank, National Association [Member]
Debt Instrument, Basis Spread on Variable Rate		1.00%
Line of Credit Facility, Interest Rate During Period		1.20%
Number Of Recent Quarters Considered For Minimum Effective Interest Rate	4	4
Minimum EBITDA		$ 11,000
EBITDA Ratio		3
Revised EBITDA	$ 3,300
Revolving Loan Agreement [Member]
Long-term Debt	10,208	$ 10,208	$ 8,478
Senior Notes [Member]
Debt Instrument, Basis Spread on Variable Rate		1.00%
Long-term Debt	3,571	$ 3,571
Maximum Potential Sale and Purchase	$ 50,000	$ 50,000
Debt Instrument, Interest Rate, Stated Percentage	6.05%	6.05%
Long-term Debt	$ 13,802	$ 13,802	$ 8,501
Debt Instrument, Interest Rate, Stated Percentage			6.05%