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Note 8 - Fair Value of Financial Instruments - Fair Value Measurements, Not Recorded (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Liabilities    
ABL Credit Facility $ 164,599 $ 145,800
Total liabilities not recorded at fair value 166,424  
Carrying Value [Member]    
Liabilities    
Total liabilities not recorded at fair value 166,424 148,490
A B L Credit Facility [Member]    
Liabilities    
ABL Credit Facility 164,599 145,800
Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member]    
Liabilities    
Total liabilities not recorded at fair value 1,825 2,690
Fair Value, Inputs, Level 1 [Member] | A B L Credit Facility [Member]    
Liabilities    
ABL Credit Facility
Fair Value, Inputs, Level 2 [Member] | Carrying Value [Member]    
Liabilities    
Total liabilities not recorded at fair value 164,599 145,800
Fair Value, Inputs, Level 2 [Member] | A B L Credit Facility [Member]    
Liabilities    
ABL Credit Facility 164,599 145,800
Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member]    
Liabilities    
Total liabilities not recorded at fair value
Fair Value, Inputs, Level 3 [Member] | A B L Credit Facility [Member]    
Liabilities    
ABL Credit Facility
Industrial Revenue Bonds [Member]    
Liabilities    
IRB 1,825 2,690
Industrial Revenue Bonds [Member] | Fair Value, Inputs, Level 1 [Member]    
Liabilities    
IRB 1,825 2,690
Industrial Revenue Bonds [Member] | Fair Value, Inputs, Level 2 [Member]    
Liabilities    
IRB
Industrial Revenue Bonds [Member] | Fair Value, Inputs, Level 3 [Member]    
Liabilities    
IRB