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LONG-TERM DEBT (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Aug. 01, 2015
Long-term debt instrument
Proceeds from issuance of long-term debt	$ 0	$ 150,000
Repayments of Long-term Debt	2,890	2,902
Long term debt, including current portion, carrying value	183,503		$ 186,393
Interest expense	3,748	$ 3,255
Term loan
Long-term debt instrument
Repayments of Long-term Debt	2,500
Long term debt, including current portion, carrying value	137,500
Capital lease obligation
Long-term debt instrument
Interest Expense, Lessee, Assets under Capital Lease	$ 400
Lease Term	10 years
Effective interest rate on debt	12.38%
Capital Lease Obligation	$ 13,700
Sale Leaseback Financing Obligation
Long-term debt instrument
Long term debt, including current portion, carrying value	$ 32,300
Effective interest rate on debt	7.32%
Interest expense	$ 600
Minimum | Term loan
Long-term debt instrument
Long term debt, including current portion, carrying value	10,000
Maximum | Term loan
Long-term debt instrument
Long term debt, including current portion, carrying value	$ 50,000
Base Rate [Member] | Term loan
Long-term debt instrument
Debt Instrument, Description of Variable Rate Basis	Administrative Agent's prime rate
initial applicable margin	1.50%
Federal Funds Effective Swap Rate [Member] | Term loan
Long-term debt instrument
Debt Instrument, Description of Variable Rate Basis	overnight federal funds effective rate
Debt Instrument, Basis Spread on Variable Rate	0.50%
One-month LIBOR | Term loan
Long-term debt instrument
Debt Instrument, Description of Variable Rate Basis	one-month LIBOR
Debt Instrument, Basis Spread on Variable Rate	1.00%
London Interbank Offered Rate (LIBOR) [Member] | Term loan
Long-term debt instrument
Debt Instrument, Description of Variable Rate Basis	one, two, three or six months or, if approved by all affected lenders, nine months
initial applicable margin	2.50%

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- Definition

The applicable margin percentage points added to the debt instrument.

+ References

No definition available.

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Lease Term

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 7

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- 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

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of the cost of borrowed funds accounted for as interest expense.

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-SubTopic 20
-Section 50
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- Definition

The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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