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DEBT (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
item
Sep. 30, 2014
USD ($)
Nov. 25, 2015
USD ($)
Jun. 30, 2015
USD ($)
Debt Instruments        
Aggregate principal amount $ 9,492,000      
Capital lease obligations 1,199,000 $ 1,321,000    
Notes payable        
Aggregate principal amount outstanding 9,492,000      
Aggregate maturities of notes payable        
January 2016 - December 2016 7,804,000      
January 2017 - December 2017 1,688,000      
Total 9,492,000      
Future minimum lease payments        
January 2016 - December 2016 781,000      
January 2017 - December 2017 418,000      
Total minimum lease payments required $ 1,199,000      
Minimum        
Future minimum lease payments        
Interest rate (as a percent) 3.16%      
Maximum        
Future minimum lease payments        
Interest rate (as a percent) 6.88%      
Existing Credit Agreement        
Debt Instruments        
Aggregate principal amount       $ 5,144,000
Borrowing, repaying and re-borrowing capacity $ 20,000,000      
Number of notes payable | item 1      
Aggregate principal amount $ 3,429,000      
Number of notes payable not covered under term loan feature | item 2      
Aggregate principal amount not covered under term loan feature outstanding $ 5,225,000      
Percentage of maximum borrowing capacity on eligible accounts receivable 80.00%      
Minimum tangible net worth $ 150,000,000      
Notes payable        
Aggregate principal amount outstanding 3,429,000      
Aggregate maturities of notes payable        
Total $ 3,429,000      
Existing Credit Agreement | Letter Of Credit        
Debt Instruments        
Aggregate principal amount     $ 1,767,000  
Existing Credit Agreement | Minimum        
Debt Instruments        
Ratio of current assets to current liabilities 1.50      
Existing Credit Agreement | Maximum        
Debt Instruments        
Interest rate 4.50%      
Debt to tangible net worth ratio 1.00      
Existing Credit Agreement | Maximum | Prime rate        
Debt Instruments        
Interest rate floor 2.50%      
Notes payable to commercial banks        
Debt Instruments        
Aggregate principal amount $ 8,654,000 10,364,000    
Notes payable        
Aggregate principal amount outstanding $ 8,654,000 $ 10,364,000    
Minimum interest rate (as a percent) 3.50% 3.20%    
Maximum interest rate (as a percent) 4.50% 3.80%    
Aggregate maturities of notes payable        
Total $ 8,654,000 $ 10,364,000    
Notes payable to finance companies for insurance        
Debt Instruments        
Number of notes payable | item 1      
Aggregate principal amount $ 838,000      
Notes payable        
Aggregate principal amount outstanding $ 838,000      
Interest rate (as a percent) 2.35%      
Aggregate maturities of notes payable        
Total $ 838,000