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Senior Debt (Details Textual)
1 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2016
USD ($)
debt_instrument
Sep. 30, 2014
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
debt_instrument
Dec. 31, 2015
Dec. 31, 2017
USD ($)
Mar. 31, 2017
USD ($)
Debt Instrument [Line Items]              
Borrowing capacity $ 17,500,000            
Revolving Credit Facility [Member]              
Long-term Debt, Fiscal Year Maturity [Abstract]              
Drawn down from credit facility     $ 3,500,000 $ 7,000,000      
Remaining borrowing capacity       7,000,000      
Minimum tangible net worth required by covenant terms       65,000,000.0      
Tangible net worth       64,100,000      
Amended Credit Agreement [Member]              
Long-term Debt, Fiscal Year Maturity [Abstract]              
Maturities in 2017       2,500,000      
Maturities in 2018       13,300,000      
Maturities in 2019       2,000,000      
Maturities in 2020       0      
Maturities in 2021       $ 0      
Secured Debt [Member]              
Debt Instrument [Line Items]              
Number of debt instruments | debt_instrument 3     3      
Weighted average interest rate     3.40% 4.10% 3.40%    
Long-term Debt, Fiscal Year Maturity [Abstract]              
Increase to interest rate spreads 50.00%            
Secured Debt [Member] | Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Borrowing capacity       $ 17,500,000.0      
Unused borrowing commitment fee percentage       0.20%      
Long-term Debt, Fiscal Year Maturity [Abstract]              
Covenant terms, fixed charge coverage ratio         1.20    
Fixed charge coverage ratio         0.9    
Secured Debt [Member] | Term Note [Member]              
Debt Instrument [Line Items]              
Face amount of debt       $ 5,000,000.0      
Term of debt instrument   5 years   5 years      
Secured Debt [Member] | 2014 Term Note [Member]              
Debt Instrument [Line Items]              
Face amount of debt       $ 7,500,000.0      
Term of debt instrument       5 years      
Secured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       3.25%      
Secured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Note [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       3.25%      
Secured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] | 2014 Term Note [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       3.75%      
Secured Debt [Member] | Prime Rate [Member] | Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       1.50%      
Secured Debt [Member] | Prime Rate [Member] | Term Note [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       1.50%      
Secured Debt [Member] | Prime Rate [Member] | 2014 Term Note [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       2.00%      
Scenario, Forecast [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member]              
Long-term Debt, Fiscal Year Maturity [Abstract]              
Minimum tangible net worth required by covenant terms, amended           $ 64,000,000 $ 62,000,000