Note 5 - Debt (Details) (USD $)	6 Months Ended				0 Months Ended	6 Months Ended						6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Mar. 16, 2012	Apr. 02, 2013 Subsequent Event [Member]	Jun. 30, 2013 Availability Dollar Amount [Member]	Jun. 30, 2013 Percentage of Commitments [Member]	Jun. 30, 2013 Amortized Banking Fees [Member]	Jun. 30, 2013 Term Loan [Member]	Mar. 16, 2012 Term Loan [Member]	Jun. 30, 2013 ABL Credit Facility [Member]	Jun. 30, 2013 Percentage of Balance of Term Loan Outstanding [Member]	Jun. 30, 2013 Maximum [Member] Base Rate [Member] Term Loan [Member]	Jun. 30, 2013 Maximum [Member] Base Rate [Member]	Jun. 30, 2013 Maximum [Member] London Interbank Offered Rate (LIBOR) [Member] Term Loan [Member]	Jun. 30, 2013 Maximum [Member] London Interbank Offered Rate (LIBOR) [Member]	Jun. 30, 2013 Maximum [Member]	Jun. 30, 2013 Minimum [Member] Base Rate [Member] Term Loan [Member]	Jun. 30, 2013 Minimum [Member] Base Rate [Member]	Jun. 30, 2013 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member] Term Loan [Member]	Jun. 30, 2013 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member]	Jun. 30, 2013 Minimum [Member]
Note 5 - Debt (Details) [Line Items]
Line of Credit Facility, Increase in Maximum Borrowing Capacity				$ 50,000,000
Line of Credit Facility, Maximum Borrowing Capacity				315,000,000
Other Long-term Debt										64,000,000
Long-term Debt, Gross									53,200,000
Line of Credit Facility, Current Borrowing Capacity	315,000,000
Line Of Credit Facility Covenant Terms Monetary						20,000,000
Line of Credit Facility, Covenant Terms							12.5%					60%					1.10					1.00
Line of Credit Facility, Amount Outstanding											39,400,000
Term Loan Outstanding	31,900,000
Line of Credit Facility, Interest Rate During Period													0.75%	0.50%	2.25%	2.00%		0.25%	0.00%	1.75%	1.50%
Prepaid Expense and Other Assets, Current	9,049,000		11,731,000					4,000,000
Line of Credit Facility, Remaining Borrowing Capacity	93,000,000
Business Combination, Consideration Transferred, Liabilities Incurred	5,900,000
Repayments of Long-term Debt	$ 4,375,000	$ 4,375,000			$ 785,000
Debt Instrument, Interest Rate at Period End	0.17%
Interest Rate Swap Agreement	3.46%