Annual report pursuant to Section 13 and 15(d)

Note 6 - Borrowings (Details Textual)

v3.5.0.2
Note 6 - Borrowings (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 28, 2015
Oct. 21, 2014
Sep. 27, 2005
Nov. 30, 2015
Mar. 31, 2015
Mar. 31, 2016
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2015
Senior Notes [Member]                    
Senior Notes     $ 200,000,000              
Debt Instrument, Term     10 years              
Term Loan [Member]                    
Line of Credit Facility, Maximum Borrowing Capacity $ 35,000,000                  
Proceeds from Issuance of Long-term Debt         $ 35,000,000          
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Average Availability Option [Member] | Minimum [Member]                    
Debt Instrument, Basis Spread on Variable Rate 1.50%                  
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Average Availability Option [Member] | Maximum [Member]                    
Debt Instrument, Basis Spread on Variable Rate 1.75%                  
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Average Availability Option B [Member]                    
Debt Instrument, Basis Spread on Variable Rate 1.00%                  
Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member] | Average Availability Option B [Member]                    
Debt Instrument, Basis Spread on Variable Rate 0.50%                  
Revolving Credit Facility [Member] | Additional Margin on Variable Rate Option [Member] | Minimum [Member]                    
Debt Instrument, Basis Spread on Variable Rate 0.50%                  
Revolving Credit Facility [Member] | Additional Margin on Variable Rate Option [Member] | Maximum [Member]                    
Debt Instrument, Basis Spread on Variable Rate 0.75%                  
Revolving Credit Facility [Member] | Minimum [Member]                    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.15%                  
Revolving Credit Facility [Member] | Maximum [Member]                    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.25%                  
Revolving Credit Facility [Member]                    
Line of Credit Facility, Maximum Borrowing Capacity $ 115,000,000                  
Proceeds from Issuance of Long-term Debt         40,000,000          
Line of Credit Facility, Interest Rate at Period End             2.00%      
Debt Instrument, Covenant, Percentage of Total Revolving Credit 20.00%                  
Long-term Debt             $ 25,000,000 $ 40,000,000    
Repayments of Long-term Debt             $ 15,000,000      
Letter of Credit [Member] | Minimum [Member]                    
Line of Credit Facility, Interest Rate During Period 1.50%                  
Letter of Credit [Member] | Maximum [Member]                    
Line of Credit Facility, Interest Rate During Period 1.75%                  
London Interbank Offered Rate (LIBOR) [Member] | Average Availability Option B [Member] | Term Loan [Member]                    
Debt Instrument, Basis Spread on Variable Rate 1.00%                  
London Interbank Offered Rate (LIBOR) [Member] | Rent Adjusted Leverage Ratio Option [Member] | Minimum [Member] | Term Loan [Member]                    
Debt Instrument, Basis Spread on Variable Rate 1.75%                  
London Interbank Offered Rate (LIBOR) [Member] | Rent Adjusted Leverage Ratio Option [Member] | Maximum [Member] | Term Loan [Member]                    
Debt Instrument, Basis Spread on Variable Rate 2.25%                  
Federal Funds Effective Swap Rate [Member] | Rent Adjusted Leverage Ratio Option [Member] | Term Loan [Member]                    
Debt Instrument, Basis Spread on Variable Rate 0.50%                  
Additional Margin on Variable Rate Option [Member] | Minimum [Member] | Term Loan [Member]                    
Debt Instrument, Basis Spread on Variable Rate 0.75%                  
Additional Margin on Variable Rate Option [Member] | Maximum [Member] | Term Loan [Member]                    
Debt Instrument, Basis Spread on Variable Rate 1.25%                  
Minimum Fixed Charge Coverage Ratio Thereafter [Member] | Term Loan [Member]                    
Fixed Charge Coverage Ratio 1.1                  
Minimum Fixed Charge Coverage Ratio for Covenant to Cease to Apply [Member] | Term Loan [Member]                    
Fixed Charge Coverage Ratio 1.25                  
Minimum Availability Needed to Avoid Re-Triggering Fixed Charge Coverage Ratio Covenant [Member] | Term Loan [Member]                    
Debt Instrument, Covenant, Percentage of Total Revolving Credit 15.00%                  
Term Loan [Member]                    
Debt Instrument, Interest Rate, Effective Percentage             2.25%      
Debt Instrument, Amortization Period 15 years                  
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Outstanding Term Loans $ 17,500,000                  
Repayments of Debt       $ 16,500,000            
Long-term Debt       $ 17,300,000            
Debt Instrument, Term   5 years                
Line of Credit Facility, Maximum Borrowing Capacity   $ 150,000,000                
Debt Issuance Costs, Net         $ 1,500,000          
Long-term Debt             $ 41,838,000 76,237,000    
Line of Credit Facility, Average Availability           65.00%        
Letters of Credit Outstanding, Amount             0.20     $ 200,000
Line of Credit Facility, Remaining Borrowing Capacity             89,800,000 74,800,000    
Repayments of Long-term Debt             $ 34,840,000 $ 133,710,000 $ 480,000