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Note 5 - Debt (Detail) (USD $)
 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 16, 2012
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Apr. 01, 2013
Subsequent Event [Member]
Mar. 31, 2013
Maximum [Member]
Term Loan [Member]
Agent Base Rate Plus Premium [Member]
Mar. 31, 2013
Maximum [Member]
Term Loan [Member]
LIBOR Rate [Member]
Mar. 31, 2013
Maximum [Member]
Agent Base Rate Plus Premium [Member]
Mar. 31, 2013
Maximum [Member]
LIBOR Rate [Member]
Mar. 31, 2013
Maximum [Member]
Mar. 31, 2013
Minimum [Member]
Term Loan [Member]
Agent Base Rate Plus Premium [Member]
Mar. 31, 2013
Minimum [Member]
Term Loan [Member]
LIBOR Rate [Member]
Mar. 31, 2013
Minimum [Member]
Agent Base Rate Plus Premium [Member]
Mar. 31, 2013
Minimum [Member]
LIBOR Rate [Member]
Mar. 31, 2013
Minimum [Member]
Mar. 31, 2013
Amortized Banking Fees [Member]
Mar. 31, 2013
Term Loan [Member]
Mar. 16, 2012
Term Loan [Member]
Mar. 31, 2013
Availability Dollar Amount [Member]
Mar. 31, 2013
Percentage of Commitments [Member]
Mar. 31, 2013
ABL Credit Facility [Member]
Mar. 31, 2013
Percentage of Balance of Term Loan Outstanding [Member]
Line of Credit Facility, Increase, Additional Borrowings (in Dollars) $ 50,000,000 $ (101,864,000) $ (154,060,000)                                      
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)                                 55,400,000          
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                   1.10         1.00         12.5%   60%
Line of Credit Facility, Amount Outstanding (in Dollars)                                         39,400,000  
Term Loan Outstanding (in Dollars)   33,200,000                                        
Line of Credit Facility, Interest Rate Description           0.75% 2.25% 0.50% 2.00%   0.25% 1.75% 0.00% 1.50%                
Prepaid Expense and Other Assets, Current (in Dollars)   6,957,000   11,731,000                       4,400,000            
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)   89,000,000                                        
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred (in Dollars)   5,900,000                                        
Repayments of Long-term Debt (in Dollars)   $ 2,187,000 $ 2,188,000   $ 785,000                                  
Debt Instrument, Interest Rate at Period End   0.22%                                        
Interest Rate Swap Agreement   3.46%