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Note 5 - Debt (Details) (USD $)
 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Availability Dollar Amount [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Monthly [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Jun. 30, 2013
ABL Credit Facility [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Term Loan [Member]
Mar. 31, 2012
ABL Credit Facility [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Revolving Credit Facility [Member]
Mar. 31, 2012
ABL Credit Facility [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Minimum [Member]
Base Rate [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Minimum [Member]
Base Rate [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Minimum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Minimum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Maximum [Member]
Base Rate [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Maximum [Member]
Base Rate [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Maximum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Mar. 31, 2014
ABL Credit Facility [Member]
Maximum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
CTI [Member]
Industrial Revenue Bond [Member]
Mar. 31, 2014
Amortized Banking Fees [Member]
Mar. 31, 2014
Minimum [Member]
Mar. 31, 2014
Maximum [Member]
Note 5 - Debt (Details) [Line Items]                                              
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)                   $ 315,000,000                          
Other Long-term Debt (in Dollars)               64,000,000                              
Long-term Debt, Gross (in Dollars)             46,700,000                                
Line of Credit Facility, Current Borrowing Capacity (in Dollars)                 315,000,000                            
Line Of Credit Facility Covenant Terms Monetary (in Dollars)     20,000,000                                        
Line of Credit Facility, Covenant Terms, Percentage of Revolver Commitments                     12.50%                        
Line of Credit Facility, Amount Outstanding (in Dollars)         46,700,000 53,200,000         39,400,000                        
Line of Credit Facility, Covenant Terms, Percentage of Term Loan                     60.00%                        
Term Loan Outstanding (in Dollars) 28,000,000                                            
Line of Credit Facility, Covenant Terms Ratio                     1.10                        
Line of Credit Facility, Interest Rate During Period                       0.25% 0.00% 1.75% 1.50% 0.75% 0.50% 2.25% 2.00%        
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)                     96,000,000                        
Prepaid Expense and Other Assets, Current (in Dollars) 11,439,000 12,786,000                                     3,000,000    
Derivative, Fixed Interest Rate 1.21%                                            
Derivative Premium Rate                                           1.75% 2.25%
Business Combination, Consideration Transferred, Liabilities Incurred (in Dollars)                                       5,900,000      
Debt Instrument, Periodic Payment, Principal (in Dollars)       $ 810,000                                      
Debt Instrument, Interest Rate at Period End                                       0.16%      
Interest Rate Swap Agreement 3.46%