Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Borrowings (Details Textual)

v3.6.0.2
Note 6 - Borrowings (Details Textual)
$ in Thousands
Oct. 21, 2014
USD ($)
Dec. 31, 2016
USD ($)
Jun. 30, 2016
USD ($)
Debt Instrument, Term 5 years    
Debt Agreement, Maximum Borrowing Capacity $ 150,000    
Debt Issuance Costs, Net 1,500 $ 734 $ 889
Letters of Credit Outstanding, Amount   100 200
Line of Credit Facility, Remaining Borrowing Capacity   $ 89,900 $ 89,800
Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 115,000    
Debt Instrument, Interest Rate, Effective Percentage   2.3125%  
Debt Instrument, Covenant, Percentage of Total Revolving Credit 20.00%    
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 $ 35,000    
Debt Instrument, Interest Rate, Effective Percentage   2.5625%  
Debt Instrument, Amortization Period 15 years    
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%    
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.00%    
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.75%    
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]      
Debt Instrument, Basis Spread on Variable Rate 2.25%    
Term Loan [Member] | Federal Funds Effective Swap Rate [Member]      
Debt Instrument, Basis Spread on Variable Rate 0.50%    
Term Loan [Member] | Additional Margin on Variable Rate Option [Member] | Minimum [Member]      
Debt Instrument, Basis Spread on Variable Rate 0.75%    
Term Loan [Member] | Additional Margin on Variable Rate Option [Member] | Maximum [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.25%