Annual report pursuant to Section 13 and 15(d)

Note 6 - Debt (Details Textual)

v3.10.0.1
Note 6 - Debt (Details Textual)
$ in Thousands
 12 Months Ended
Oct. 21, 2014
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Debt Instrument, Term 5 years    
Debt Agreement, Maximum Borrowing Capacity $ 150,000    
Debt Issuance Costs, Net, Total 1,500 $ 579
Letters of Credit Outstanding, Amount   6,200 100
Line of Credit Facility, Remaining Borrowing Capacity   108,800 114,900
Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 115,000    
Debt Instrument, Covenant, Percentage of Total Revolving Credit 20.00%    
Repayments of Lines of Credit   13,800 $ 25,000
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] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.00%    
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.50%    
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.75%    
Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [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%    
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%    
Term Loan [Member]      
Long-term Debt, Total $ 35,000    
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio 1.1    
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Outstanding Term Loans $ 17,500    
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio for Covenant to Cease to Apply 1.25    
Debt Instrument, Covenant, Minimum Percentage of Total Revolving Credit to Avoid Triggering Fixed Charge Coverage Ratio Covenant 15.00%    
Letter of Credit Issued for Workers Compensation Obligation [Member]      
Letters of Credit Outstanding, Amount   $ 5,900