CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (29,355)us-gaap_NetIncomeLoss	$ (48,721)us-gaap_NetIncomeLoss	$ (52,074)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	24,013	25,511	33,637
Asset impairment	3,323us-gaap_AssetImpairmentCharges	3,204us-gaap_AssetImpairmentCharges	5,341us-gaap_AssetImpairmentCharges
Non-cash stock-based compensation	1,621us-gaap_ShareBasedCompensation	2,643us-gaap_ShareBasedCompensation	2,836us-gaap_ShareBasedCompensation
Amortization of debt discount	2,997	2,164	1,548
(Gain) loss on derivative liability	(2,272)us-gaap_UnrealizedGainLossOnDerivatives	10,638us-gaap_UnrealizedGainLossOnDerivatives	6us-gaap_UnrealizedGainLossOnDerivatives
Loss on disposal of property and equipment	278us-gaap_GainLossOnDispositionOfAssets	150us-gaap_GainLossOnDispositionOfAssets	268us-gaap_GainLossOnDispositionOfAssets
Gain on lease terminations	(191)us-gaap_GainLossOnContractTermination	(209)us-gaap_GainLossOnContractTermination	(268)us-gaap_GainLossOnContractTermination
Change in assets and liabilities:
Inventories	1,415us-gaap_IncreaseDecreaseInInventories	7,608us-gaap_IncreaseDecreaseInInventories	(1,941)us-gaap_IncreaseDecreaseInInventories
Other current assets	2,811	(3,767)	5,743
Other assets	(252)	1,341	2,121
Accounts payable	(9,259)	(4,024)	11,079
Other current liabilities	10,762	(7,151)	(2,347)
Deferred lease incentives	(1,964)	(1,355)	(3,280)
Deferred rent	(676)psun_IncreaseDecreaseInDeferredRent	(575)psun_IncreaseDecreaseInDeferredRent	(469)psun_IncreaseDecreaseInDeferredRent
Other long-term liabilities	7,481	4,819	4,244
Net cash provided by (used in) operating activities	10,732	(7,724)	6,444
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, equipment, and intangible assets	(15,595)	(12,337)	(15,393)
Restricted cash	0	0	8,593
Proceeds from insurance settlement	0	0	653
Net cash used in investing activities	(15,595)	(12,337)	(6,147)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from credit facility borrowings	15,000	0	0
Payments under credit facility borrowings	(15,000)	0	(1,254)
Proceeds from mortgage borrowings	618	0	0
Principal payments under mortgage borrowings	(554)us-gaap_RepaymentsOfSecuredDebt	(576)us-gaap_RepaymentsOfSecuredDebt	(540)us-gaap_RepaymentsOfSecuredDebt
Payments for debt issuance costs	(116)us-gaap_PaymentsOfDebtIssuanceCosts	0us-gaap_PaymentsOfDebtIssuanceCosts	0us-gaap_PaymentsOfDebtIssuanceCosts
Principal payments under capital lease obligations	(639)	(569)	(636)
Proceeds from exercise of stock options	373	242	560
Net cash used in financing activities	(318)	(903)	(1,870)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(5,181)	(20,964)	(1,573)
CASH AND CASH EQUIVALENTS, beginning of fiscal year	27,769	48,733	50,306
CASH AND CASH EQUIVALENTS, end of fiscal year	22,588	27,769	48,733
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest	6,328us-gaap_InterestPaid	5,660us-gaap_InterestPaid	3,535us-gaap_InterestPaid
Cash paid for income taxes	888us-gaap_IncomeTaxesPaid	785us-gaap_IncomeTaxesPaid	396us-gaap_IncomeTaxesPaid
SUPPLEMENTAL DISCLOSURES OF NON-CASH TRANSACTIONS:
Property, equipment, and intangible asset purchases accrued at end of period	475	720	836
Capital lease transactions for property, equipment, and intangible assets	$ 1,057us-gaap_CapitalLeaseObligationsIncurred	$ 1,228us-gaap_CapitalLeaseObligationsIncurred	$ 111us-gaap_CapitalLeaseObligationsIncurred

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-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 20

-Article 9

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to investments, for example fixed assets. It excludes insurance settlements classified as operating cash flows.

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- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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