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Note 9 - Credit Agreements (Details Textual) $ in Thousands							3 Months Ended				9 Months Ended		12 Months Ended
	May. 29, 2015 USD ($)	Mar. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Apr. 30, 2014 USD ($)	Apr. 02, 2014	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	May. 31, 2013 USD ($)
Term Loan [Member] | Base Rate [Member] | Net Debt Leverage Ratio Threshold [Member]
Debt Instrument, Basis Spread on Variable Rate											1.50%
Term Loan [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate											1.75%
Term Loan [Member] | Adjusted LIBOR Rate [Member] | Net Debt Leverage Ratio Threshold [Member]
Debt Instrument, Basis Spread on Variable Rate											2.50%
Term Loan [Member] | Adjusted LIBOR Rate [Member]
Debt Instrument, Basis Spread on Variable Rate											2.75%
Term Loan [Member] | LIBOR Floor Rate [Member]
Debt Instrument, Basis Spread on Variable Rate											0.75%
Term Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity														$ 1,200,000
Uncommitted Incremental Term Loan Facility														300,000
Net Debt Leverage Ratio Threshold											3
Net Debt Leverage Ratio Achieved						3	3
Debt Instrument, Interest Rate, Increase (Decrease)							0.25%			(0.25%)
Gain Loss on Change in Cash Flows Related to Debt							$ 2,381			$ 16,014
Payments for Fees								$ 1,528
Debt Instrument, Fee Amount								$ 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
Base Rate [Member] | ABL Revolving Credit Facility [Member]
Debt Instrument, Basis Spread on Variable Rate											1.00%
Adjusted LIBOR Rate [Member] | ABL Revolving Credit Facility [Member]
Debt Instrument, Basis Spread on Variable Rate											2.00%
ABL Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity														150,000
Uncommitted Incremental Term Loan Facility														$ 50,000
Amended ABL Facility [Member]
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							490				$ 490
Proceeds from Lines of Credit	$ 100,000
Long-term Line of Credit							100,000				100,000
Line of Credit Facility, Remaining Borrowing Capacity							148,500				148,500
Gain Loss on Change in Cash Flows Related to Debt							(2,381)				(2,381)	$ 16,014
Short-term Debt			$ 5,359				$ 4,481				$ 4,481		$ 5,359

X

- Definition

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

+ References

No definition available.

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- Definition

Represents net debt leverage ratio that the borrower has achieved (the borrower's actual net debt leverage ratio is below this target).

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Refers to uncommitted incremental term loan facility after amendment.

+ References

No definition available.

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X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

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

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-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.22(b))



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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

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- Definition

For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Name Regulation S-X (SX)



-Number 210



-Section 02



-Paragraph 19, 20, 22



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X

- Definition

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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X

- Definition

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

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X

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

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- Definition

The amount of cash paid during the current period for fees which are not defined elsewhere in the taxonomy.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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