XML 45 R34.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 6 - Long-term Debt (Details Textual)
1 Months Ended 9 Months Ended 10 Months Ended 12 Months Ended
Mar. 01, 2017
USD ($)
Jan. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2017
USD ($)
Feb. 28, 2022
USD ($)
Debt Issuance Costs, Gross $ 460,000          
Repayments of Debt     $ 9,750,000 $ 3,750,000    
Subsequent Event [Member]            
Repayments of Debt   $ 3,500,000        
Credit Facility [Member]            
Debt Instrument Convenant, Maximum Leverage Ration, During the Initial Holiday Period 3.5          
Debt Instrument Covenant, Maximum Leverage Ratio, Immediately Following the Initial Holiday Period 3.25          
Debt Instrument Covenant, Fixed Charge Coverage Ratio 1.25          
Credit Facility [Member] | After March 31, 2016 [Member]            
Debt Instrument Covenant, Ratio of Funded Debt to Consolidated EBITDA 3          
Credit Facility [Member] | Term Loan [Member]            
Long-term Debt, Gross $ 20,000,000          
Line of Credit Facility, Periodic Payment, Number of Quarterly Payments 20          
Debt Instrument, Periodic Payment, Principal         $ 250,000  
Line of Credit Facility, Annual Increase (Decrease) in Periodic Payment, Principal         $ 125,000  
Credit Facility [Member] | Term Loan [Member] | Scenario, Forecast [Member]            
Debt Instrument, Periodic Payment, Principal           $ 750,000
Line of Credit [Member]            
Long-term Debt, Gross $ 20,000,000          
Line of Credit [Member] | Debt Instrument, Variable Rate Base CBFR Using One Month LIBOR [Member]            
Debt Instrument, Basis Spread on Variable Rate Used to Calculate Commercial Bank Floating Rate 0.50%          
Line of Credit [Member] | Minimum [Member]            
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.15%          
Line of Credit [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Debt Instrument, Basis Spread on Variable Rate 1.50%          
Line of Credit [Member] | Maximum [Member]            
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.35%          
Line of Credit [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Debt Instrument, Basis Spread on Variable Rate 2.50%          
Line of Credit [Member] | Credit Facility [Member]            
Debt Instrument, Term 5 years          
Line of Credit Facility, Maximum Borrowing Capacity $ 80,000,000          
Line of Credit Facility, Additional Maximum Borrowing Capacity 100,000,000          
Letter of Credit [Member] | Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity $ 2,500,000