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Note 9 - Debt (Details) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Jul. 02, 2011
Apr. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Mar. 31, 2012
Additional Commitments due to Amendment [Member]
ABL Credit Facility [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Monthly [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Jun. 30, 2012
ABL Credit Facility [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Term Loan [Member]
Mar. 31, 2012
ABL Credit Facility [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Revolving Credit Facility [Member]
Mar. 31, 2012
ABL Credit Facility [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Minimum [Member]
Base Rate [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Minimum [Member]
Base Rate [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Minimum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Minimum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Maximum [Member]
Base Rate [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Maximum [Member]
Base Rate [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Maximum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Dec. 31, 2013
ABL Credit Facility [Member]
Maximum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
CTI [Member]
Industrial Revenue Bond [Member]
Dec. 31, 2013
Amortized Banking Fees [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Note 9 - Debt (Details) [Line Items]                                                      
Line of Credit Facility, Maximum Borrowing Capacity             $ 50,000,000             $ 315,000,000                          
Other Long-term Debt                     70,000,000 64,000,000                              
Long-term Debt, Gross     219,200,000 254,200,000 165,000,000           49,000,000                         4,300,000      
Line of Credit Facility, Current Borrowing Capacity                         315,000,000                            
Line of Credit Facility, Covenant Terms, Percentage of Revolver Commitments                             12.50%                        
Line of Credit Facility, Amount Outstanding                 48,900,000 53,200,000     39,400,000                            
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                             99,200,000                        
Prepaid Expense and Other Assets, Current     12,786,000 11,731,000                                         3,400,000    
Amortization of Financing Costs     1,300,000 1,300,000 684,000                                            
Derivative, Fixed Interest Rate     1.21%                                                
Derivative Premium Rate                                                   1.75% 2.25%
Business Combination, Consideration Transferred, Liabilities Incurred 5,900,000                                             5,900,000      
Debt Instrument, Interest Rate at Period End                                               0.15%      
Interest Rate Swap Agreement     3.46%                                                
Payments to Acquire Property, Plant, and Equipment   1,400,000   1,400,000                                              
Capital Lease Obligations, Current       1,400,000   1,600,000                                          
Debt Instrument, Periodic Payment, Principal               729,000                                      
Debt Instrument, Interest Rate, Effective Percentage     2.30% 2.70% 3.10%                                            
Interest Paid     $ 5,537,000 $ 7,295,000 $ 5,081,000