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Note 14 - Debt (Details Textual)
12 Months Ended
Mar. 09, 2016
USD ($)
Feb. 26, 2016
USD ($)
Feb. 25, 2016
USD ($)
Oct. 30, 2015
USD ($)
Jul. 09, 2015
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2015
USD ($)
Jul. 02, 2015
USD ($)
Promissory Note [Member] | Gill Family Capital Management [Member] | Subsequent Event [Member]                  
Subordinated Debt   $ 6,500,000 $ 6,500,000            
Proceeds from Issuance of Subordinated Long-term Debt   $ 1,000,000 1,000,000            
Promissory Note [Member] | Gill Family Capital Management [Member]                  
Subordinated Debt           $ 5,500,000     $ 5,500,000
Debt Instrument, Interest Rate, Stated Percentage           8.00%      
Meritor Note [Member]                  
Debt Instrument, Interest Rate, Stated Percentage                 10.00%
Debt Instrument, Face Amount                 $ 3,047,000
Meritor Note Amendment [Member]                  
Secured Debt         $ 412,000     $ 321,000  
Term Loan [Member] | Subsequent Event [Member]                  
Additional Amount of Cash to Be Deposited Into a Controlled Cash Collateral Account to be held for one year $ 6,000,000   $ 6,000,000            
Debt Instrument, Interest Rate, Increase (Decrease)     1.00%            
Term Loan [Member]                  
Debt Instrument, Face Amount       $ 12,000,000          
New Credit Facility [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility, Fixed Charge Coverage Ratio Trigger, Borrowing Availability     $ 3,000,000            
Line of Credit Facility, Additional Borrowing Capacity     $ 1,655,000            
New Credit Facility [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity       15,000,000          
Line of Credit Facility, Fixed Charge Coverage Ratio Trigger, Borrowing Availability       $ 4,000,000          
Fixed Charge Coverage Ratio Applicable If Borrowing Availability Falls Below a Specified Level       1          
Morganton [Member] | Morganton Facility [Member]                  
Proceeds from Sale of Productive Assets         3,200,000        
Cash [Member]                  
Unrestricted Cash Balance           $ 1,349,000      
Mexican Subsidiaries [Member]                  
Unrestricted Cash Balance           1,183,000      
Disposal Group, Including Discontinued Operation, Consideration, Assets Transferred and Liabilities Assumed         $ 12,500,000        
Line of Credit Facility, Current Borrowing Capacity           8,369,000      
Letters of Credit Outstanding, Amount           2,132,000      
Line of Credit Facility, Remaining Borrowing Capacity           6,237,000      
Unrestricted Cash Balance and Borrowing Capacity           $ 3,586,000      
Debt Instrument, Interest Rate, Effective Percentage           10.50%      
Long-term Debt, Weighted Average Interest Rate           7.20% 2.50%    
Interest Paid, Net           $ 1,436,000 $ 397,000