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Note 9 - Credit Agreements (Details) $ in Thousands								3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($)	May. 29, 2015 USD ($)	Mar. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Apr. 30, 2014 USD ($)	Apr. 01, 2014	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	May. 31, 2013 USD ($)
Note 9 - Credit Agreements (Details) [Line Items]
Gain on Change in Contractual Interest Rate								$ 16,014		$ 16,014
Short-term Debt	$ 2,993			$ 5,359					$ 2,993		$ 5,359
Term Loan [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity												$ 1,200,000
Uncommitted Incremental Term Loan Facility												300,000
Net Debt Leverage Ratio Threshold									3.00
Net Debt Leverage Ratio Achieved	3.00						3.00
Debt Instrument, Interest Rate, Increase (Decrease)	0.25%									(0.25%)
Gain on Change in Contractual Interest Rate								$ 16,014
Payments for Fees									$ 1,528
Debt Instrument, Fee Amount	$ 49								49
Repayments of Long-term Debt		$ 100,000	$ 50,000	$ 25,000	$ 50,000	$ 12,000
Write off of Deferred Debt Issuance Cost									$ 4,795		$ 2,084
Term Loan [Member] | Base Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									1.75%
Term Loan [Member] | Adjusted LIBOR Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									2.75%
Term Loan [Member] | LIBOR Floor Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									0.75%
Term Loan [Member] | Net Debt Leverage Ratio Threshold [Member] | Base Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									1.50%
Term Loan [Member] | Net Debt Leverage Ratio Threshold [Member] | Adjusted LIBOR Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									2.50%
ABL Revolving Credit Facility [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity												150,000
Uncommitted Incremental Term Loan Facility												$ 50,000
ABL Revolving Credit Facility [Member] | Base Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									1.00%
ABL Revolving Credit Facility [Member] | Adjusted LIBOR Rate [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									2.00%
Amended ABL Facility [Member]
Note 9 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		250,000
Uncommitted Incremental Term Loan Facility		$ 100,000
Debt Instrument, Basis Spread on Variable Rate		0.50%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.125%
Deferred Finance Costs, Gross	483								$ 483
Proceeds from Lines of Credit		$ 100,000
Long-term Line of Credit	100,000								100,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 133,100								$ 133,100

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Gain on change in cash flows related to debt during the period.

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Threshold of the ratio used to calculate the financial leverage and the ability to meet financial obligations. If the borrower's actual net debt leverage ratio falls below this threshold for a certain measurement period, the applicable margin related to LIBOR rate loans can be reduced by a specified percentage.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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