Christopher & Banks (CBKCQ) 10-K 9 Apr 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Jan. 31, 2015	Apr. 03, 2015	Aug. 01, 2014
Document And Entity Information
Document Period End Date	31-Jan-15
Christopher & Banks Corp	Christopher & Banks Corporation
Entity Central Index Key	883943
Current Fiscal Year End Date	-30
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	FALSE
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		36,900,000
Entity Public Float			$313.60

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jan. 31, 2015	Feb. 01, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$37,245	$41,074
Short-term investments	13,293	12,982
Accounts receivable	4,000	2,428
Merchandise inventories	45,318	44,877
Prepaid expenses and other current assets	6,700	7,408
Deferred income taxes, current	3,550
Income taxes receivable	845	310
Total current assets	110,951	109,079
Property, equipment and improvements, net	45,107	36,458
Other non-current assets:
Long-term investments	4,752	3,143
Deferred income taxes, non-current	34,388
Other assets	839	298
Total other non-current assets	39,979	3,441
Total assets	196,037	148,978
Current liabilities:
Accounts payable	18,411	23,198
Accrued salaries, wages and related expenses	2,957	6,322
Accrued liabilities and other current liabilities	23,988	23,748
Total current liabilities	45,356	53,268
Non-current liabilities:
Deferred lease incentives	7,110	4,773
Deferred rent obligations	6,390	2,860
Other non-current liabilities	1,292	1,140
Total non-current liabilities	14,792	8,773
Commitments
Stockholders' equity
Preferred stock - $0.01 par value, 1,000 shares authorized, none outstanding
Common stock - $0.01 par value, 74,000 shares authorized, 46,720 and 46,214 shares issued, and 36,929 and 36,423 shares outstanding at January 31, 2015 and February 1, 2014, respectively	466	461
Additional paid-in capital	124,242	122,416
Retained earnings	123,894	76,768
Common stock held in treasury, 9,791 shares at cost at January 31, 2015 and February 1, 2014	-112,711	-112,711
Accumulated other comprehensive (loss) income	-2	3
Total stockholders' equity	135,889	86,937
Total liabilities and stockholders' equity	$196,037	$148,978

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jan. 31, 2015	Feb. 01, 2014
Stockholders' equity
Preferred stock, par value (in dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	74,000,000	74,000,000
Common stock, shares issued	46,720,000	46,214,000
Common stock, shares outstanding	36,929,000	36,423,000
Common stock held in treasury, shares	9,791,000	9,791,000

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Income Statement
Net sales	$418,584	$435,754	$430,302
Costs and expenses:
Merchandise, buying and occupancy	270,790	284,723	303,680
Selling, general and administrative	126,377	128,847	129,153
Depreciation and amortization	11,786	13,168	18,595
Impairment of store assets	216	140	-5,161
Total costs and expenses	409,169	426,878	446,267
Operating income	9,415	8,876	-15,965
Other expense	-191	-191	-14
Income before income taxes	9,224	8,685	-15,979
Income tax (benefit) provision	-37,902	-5	97
Net income (loss)	$47,126	$8,690	($16,076)
Basic income (loss) per share:
Net income (loss)	$1.28	$0.24	($0.45)
Basic shares outstanding	36,819	36,246	35,694
Diluted income (loss) per share:
Net income (loss)	$1.24	$0.23	($0.45)
Diluted shares outstanding	37,753	37,144	35,694

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Statement of Comprehensive Income
Net income (loss)	$47,126	$8,690	($16,076)
Other comprehensive income (loss), net of tax:
Unrealized holding gains (losses) on securities arising during the period, net of taxes of $2, $0 and $(1), respectively	-5	3	-2
Reclassification adjustment for losses included in net income, net of taxes of $0, $0 and $39, respectively			-60
Total other comprehensive (loss) income	-5	3	-62
Comprehensive income (loss)	$47,121	$8,693	($16,138)

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Statement of Comprehensive Income
Tax expense related to unrealized holding losses	$2	$0	($1)
Tax expense related to reclassification adjustment for gains included in net income	$0	$0	$39

Consolidated_Statement_of_Stoc

Consolidated Statement of Stockholders Equity (USD $)	Treasury Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
In Thousands
Stockholders' Equity at Jan. 28, 2012	($112,711)	$458	$117,399	$84,154	$62	$89,362
Treasury stock, shares at Jan. 28, 2012	9,791
Common stock, shares outstanding at Jan. 28, 2012		36,028
Total comprehensive income (loss)				-16,076	-62	-16,138
Issuance of restricted stock, net of forfeitures, in shares		936
Issuance of restricted stock, net of forfeitures		9	-75			-66
Stock-based compensation expense			2,308			2,308
Stockholders' Equity at Feb. 02, 2013	-112,711	467	119,632	68,078		75,466
Treasury stock, shares at Feb. 02, 2013	9,791
Common stock, shares outstanding at Feb. 02, 2013		36,964
Total comprehensive income (loss)				8,690	3	8,693
Stock issued on exercise of options, in shares, net		56
Stock issued on exercise of options, net		1	2			3
Issuance of restricted stock, net of forfeitures, in shares		-597
Issuance of restricted stock, net of forfeitures		-7	6			-1
Stock-based compensation expense			2,776			2,776
Stockholders' Equity at Feb. 01, 2014	-112,711	461	122,416	76,768	3	86,937
Treasury stock, shares at Feb. 01, 2014	9,791					9,791
Common stock, shares outstanding at Feb. 01, 2014		36,423				36,423
Total comprehensive income (loss)				47,126	-5	47,121
Stock issued on exercise of options, in shares, net		470
Stock issued on exercise of options, net		5	-386			-381
Issuance of restricted stock, net of forfeitures, in shares		36
Issuance of restricted stock, net of forfeitures			-106			-106
Stock-based compensation expense			2,318			2,318
Stockholders' Equity at Jan. 31, 2015	($112,711)	$466	$124,242	$123,894	($2)	$135,889
Treasury stock, shares at Jan. 31, 2015	9,791					9,791
Common stock, shares outstanding at Jan. 31, 2015		36,929				36,929

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Cash flows from operating activities:
Net income (loss)	$47,126	$8,690	($16,076)
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	11,786	13,168	18,595
Deferred income taxes, net	-37,938
Impairment of store assets	216	140	424
Amortization of discount on investments	47	56	-444
Amortization of financing costs	68	73	35
Deferred lease-related liabilities	6,473	-1,819	-7,216
Stock-based compensation expense	2,318	2,776	2,308
Loss on disposal of assets	56	9	52
Loss (gain) on investments, net	1		-76
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	-1,572	1,202	19
Increase in merchandise inventories	-441	-2,173	-3,249
Decrease (increase) in prepaid expenses and other assets	198	-555	-3,355
(Increase) decrease in income taxes receivable	-535	95	783
(Decrease) increase in accounts payable	-5,119	612	2,952
(Decrease) increase in accrued liabilities	-3,826	3,240	-3,871
Decrease in termination liabilities			-8,032
Increase (decrease) in other liabilities	143	-460	-290
Net cash provided by (used in) operating activities	19,001	25,054	-17,441
Cash flows from investing activities:
Purchases of property, equipment and improvements	-20,270	-8,544	-3,623
Proceeds from sale of furniture, fixtures and equipment			35
Purchases of available-for-sale investments	-18,480	-24,484
Redemptions of available-for-sale investments	16,506	8,306	21,403
Net cash (used in) provided by investing activities	-22,244	-24,722	17,815
Cash flows from financing activities:
Shares redeemed for payroll taxes	-1,486	-211	-67
Exercise of stock options	999	214
Payment of deferred financing costs	-99		-350
Net cash (used in) provided by financing activities	-586	3	-417
Net (decrease) increase in cash and cash equivalents	-3,829	335	-43
Cash and cash equivalents at beginning of period	41,074	40,739	40,782
Cash and cash equivalents at end of period	37,245	41,074	40,739
Supplemental Cash Flow Information:
Interest paid	259	253	130
Income taxes paid (refunded)	487	215	-622
Unpaid purchases of equipment and improvements	740	304	269
Shares surrendered for stock option cost	$1,715

Nature_of_Business_and_Signifi

Nature of Business and Significant Accounting Policies	12 Months Ended
	Jan. 31, 2015
Nature of Business and Significant Accounting Policies [Abstract]
Nature of Business and Significant Accounting Policies	NOTE 1 — Nature of Business and Significant Accounting Policies
	Christopher & Banks Corporation, through its wholly owned subsidiaries (collectively referred to as “Christopher & Banks”, “the Company”, “we” or “us”), operates retail stores selling women’s apparel in the United States ("U.S."). The Company operated 518,  560 and 608 stores as of January 31, 2015, February 1, 2014 and February 2, 2013, respectively. The Company also operates an eCommerce website for its Christopher & Banks and C.J. Banks brands at www.christopherandbanks.com.
	Fiscal year and basis of presentation
	The Company follows the standard fiscal year of the retail industry, which is a fifty-two or fifty-three week period ending on the Saturday closest to January 31, and is designated by the calendar year in which the fiscal year commences.  The fiscal years ended January 31, 2015 (“fiscal 2014”), February 1, 2014 (“fiscal 2013”) and February 2, 2013 ("fiscal 2012") consisted of fifty-two weeks, fifty-two weeks and fifty-three weeks, respectively.
	The consolidated financial statements include the accounts of Christopher & Banks Corporation and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
	Certain reclassifications have been made to prior period amounts to conform to the current period presentation.  None of the reclassifications had a material effect on the Company’s financial position, results of operations or cash flows in any period.
	Correction of an error
	In connection with the preparation of the Company’s consolidated financial statements for the fiscal year ended January 31, 2015, the Company determined that its calculation of deferred rent expense was incorrect.  The Company corrected the error in the fourth quarter of fiscal 2014, which resulted in a cumulative increase to rent expense of approximately $3.6 million recorded in merchandise, buying and occupancy expenses within the consolidated statements of operations.  The effect of the correction was to decrease the Company’s operating income for the 2014 fourth quarter and fiscal year by approximately $3.6 million; net income for the fourth quarter and fiscal year were reduced by approximately $2.2 million.  There was no impact to cash flows from operations.  The Company has concluded that this correction is immaterial to the related consolidated financial statements as a whole.
	Use of estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during reporting periods. As a result, actual results could differ because of the use of these estimates and assumptions.
	Cash and cash equivalents
	Cash and cash equivalents consist of cash on hand and in banks and investments purchased with an original maturity of ninety days or less.
	Investments
	Investments are accounted for in accordance with Accounting Standards Codification ("ASC") 320-10, Investments — Debt and Equity Securities. At January 31, 2015 and February 1, 2014, the Company's investment balances consisted solely of available-for-sale securities and were valued at fair value in accordance with ASC 820-10 Fair Value Measurements.
	Available-for-sale securities are carried at fair value with unrealized gains and losses reported as a component of stockholders’ equity as accumulated other comprehensive income (loss), net of tax. Fair value for available-for-sale securities is based on quoted prices for similar assets in active markets or quoted prices for identical or similar assets in markets in which there were fewer transactions. Amortization of premiums or discounts arising at acquisition, and gains or losses on the disposition of available-for-sale securities are reported as other income (expense) in the consolidated statements of operations. Realized gains and losses, if any, are calculated on the specific identification method and are included in other income (expense) in the consolidated statements of operations.
	Available-for-sale securities are reviewed for possible impairment at least quarterly, or more frequently if circumstances arise which may indicate impairment. When the fair value of the securities declines below the amortized cost basis, impairment is indicated and it must be determined whether it is other than temporary. Impairment is considered to be other than temporary if the Company: (i) intends to sell the security, (ii) will more likely than not be forced to sell the security before recovering its cost, or (iii) does not expect to recover the security’s amortized cost basis. If the decline in fair value is considered other than temporary, the cost basis of the security is adjusted to its fair market value and the realized loss is reported in earnings.  Subsequent increases or decreases in fair value are reported in equity as accumulated other comprehensive income (loss).
	Inventory valuation
	Merchandise inventories, all of which are finished goods, are stated at the lower of cost or market utilizing the retail inventory method. The Company manages its inventory levels and uses markdowns to clear merchandise. Decisions to mark down merchandise are based on a number of factors including the current rate of sale, quantity on hand and age of the inventory. The Company estimates and records markdowns when necessary to liquidate aged inventory. Actual markdowns taken are regularly compared against previous estimates and factored into future estimates.
	Property, equipment and improvements, net
	Property, equipment and improvements are initially recorded at cost. Property and equipment is depreciated on a straight-line basis over its estimated useful life; 3 to 5 years for computer hardware and software, 3 to 10 years for store furniture and fixtures, 7 years for corporate and distribution center furniture, fixtures and other equipment, and 25 years for corporate office and distribution center and related building improvements. Store leasehold improvements are amortized over the shorter of the useful life or term of the related lease, which is typically 10 years.
	Repairs and maintenance which do not extend an asset’s useful life are expensed as incurred. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts, and any resulting gain or loss is reflected in income for that period.
	Long-lived assets
	The Company reviews long-lived assets with definite lives at least annually or whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable in accordance with ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets.   This review includes the evaluation of individual under-performing stores and assessment of the recoverability of the carrying value of the assets related to the store. Future cash flows are projected for the remaining lease life considering such factors as future sales levels, merchandise margins, operating income, changes in occupancy expenses other than base rent and other expenses, as well as the overall operating environment specific to that store. If the estimated undiscounted future cash flows are less than the carrying value of the assets, an impairment charge is recorded for the difference between the assets’ fair value and carrying value.
	Fair value is determined by a discounted cash flow analysis. In determining future cash flows, the Company uses its best estimate of future operating results and utilizes market participant based assumptions. Consistent with current operating plans, a small decrease in same-store sales was assumed for one year, followed by gradual sales improvements in succeeding years. Subsequent future growth in same-store sales is based on historical same-store sales growth rates.
	The projection of future cash flows involves the use of significant estimates and assumptions, including estimated sales, merchandise margin and expense levels, and the selection of an appropriate discount rate, therefore differences in circumstances or estimates could produce different results. The current economic environment and competitive retail landscape make it possible that additional long-lived asset impairments could be identified and recorded in future periods.
	Included in the review is the assessment of the recoverability of the carrying value of the assets related to the corporate office and distribution center. As these assets do not have identifiable cash flows that are largely independent of store cash flows, the Company utilized a residual approach where the carrying value of the corporate office and distribution center assets are compared with the estimated undiscounted future cash flows available from the stores remaining after any impairment losses. If the estimated undiscounted future cash flows are less than the carrying value of the assets related to the corporate office and distribution center, an impairment charge is recorded for the difference between the assets’ fair value and carrying value.
	Common stock held in treasury
	Treasury stock is accounted for under the cost method, whereby stockholders’ equity is reduced for the total cost of the shares repurchased.
	Revenue recognition
	Sales are recognized at the point of purchase when a customer takes possession of the merchandise and pays for the purchase with cash, credit card, debit card or gift card. The Company's eCommerce operation records revenue upon the estimated date the customer receives the merchandise. Shipping and handling revenues are included in net sales. Sales are recognized net of a sales return reserve, which is based on historical sales return data and is not material. Sales taxes collected from customers are remitted to the appropriate taxing jurisdictions and are excluded from net sales.
	Gift cards are recorded as a liability when issued and until they are redeemed, at which point a sale is recorded. Unredeemed gift cards (“gift card breakage”) is recognized as a reduction of merchandise, buying and occupancy costs when the likelihood of a gift card being redeemed by a customer in the future is deemed remote and the Company determines that there is no legal obligation to remit the value of the unredeemed gift card to any state or local jurisdiction as unclaimed or abandoned property.  The Company utilizes historical redemption patterns in order to estimate the rate and timing of breakage associated with gift cards.  Based on historical redemption patterns, we currently recognize breakage for a portion of the gift card balances that remain outstanding following 36 months of issuance.
	Vendor allowances
	At certain times the Company receives allowances or credits from its merchandise vendors primarily related to goods that do not meet our quality standards. These allowances or credits are reflected as a reduction of merchandise inventory in the period they are received. The majority of merchandise is produced exclusively for the Company. Accordingly, the Company does not enter into any arrangements with vendors where payments or other consideration might be received in connection with the purchase or promotion of a vendor’s products such as buy-down agreements or cooperative advertising programs.
	Merchandise, buying and occupancy costs
	Merchandise, buying and occupancy costs include the cost of merchandise, markdowns, shrink, freight, shipping and handling charges, buyer and distribution center salaries, buyer travel, rent and other occupancy related costs, various merchandise design and development costs, miscellaneous merchandise-related expenses and other costs related to the Company's distribution network. Merchandise, buying and occupancy costs do not include any depreciation or amortization expense.
	Selling, general and administrative expenses
	Selling, general and administrative expenses include salaries, with the exception of buyer and distribution center salaries, other employee benefits, marketing, store supplies, payment processing fees, information technology-related costs, insurance, professional services, non-buyer travel and miscellaneous other selling and administrative related expenses. Selling, general and administrative expenses do not include any depreciation or amortization expense.
	Store pre-opening costs
	Non-capital expenditures such as payroll and training costs incurred prior to the opening of a new store are charged to selling, general and administrative expense in the period they are incurred.
	Rent expense, deferred rent obligations and deferred lease incentives
	The Company leases all of its store locations under operating leases. Most of these lease agreements contain tenant improvement allowances, funded by landlord cash incentives or rent abatements, which are recorded as a deferred lease incentive liability and amortized as a reduction of rent expense over the term of the lease. For purposes of recognizing landlord incentives and minimum rental expense, the Company utilizes the date that it obtains the legal right to use and control the leased space, which is generally when the Company enters the space and begins to make improvements in preparation for opening a new store location.
	Certain lease agreements contain rent escalation clauses which provide for scheduled rent increases during the lease term or for rental payments commencing at a date other than the date of initial occupancy. Such escalating rent expense is recorded on a straight-line basis over the lease term, not including any renewal option periods, and the difference between the recognized rent expense and amounts payable under the lease are recorded as deferred rent obligations.
	The Company's leases may also provide for contingent rents, which are determined as a percentage of sales in excess of specified levels. When specified levels have been achieved or when management determines that achieving the specified levels during the fiscal year is probable, the Company records a current accrued liability along with the corresponding rent expense.
	Advertising
	Advertising costs are expensed as incurred and included in selling, general and administrative expenses. Advertising costs for fiscal 2014, fiscal 2013 and fiscal 2012, were approximately $7.9 million, $7.4 million and $4.8 million, respectively.
	Customer loyalty program
	The Company’s Friendship Rewards loyalty program grants customers the ability to accumulate points based on purchase activity. Once a Friendship Rewards member achieves a certain point level, the member earns awards certificates that may be redeemed towards merchandise purchases. Points are accrued as unearned revenue and recorded as a reduction of net sales and a current liability as they are accumulated by members and certificates are earned. The liability is recorded net of estimated breakage based on historical redemption patterns and trends. Revenue and the related cost of sales are recognized upon redemption of the reward certificates, which expire approximately six weeks after issuance.
	Private label credit card program
	During fiscal 2012, the Company launched a private label credit card program with a sponsoring bank which provides for the issuance of credit cards bearing the Christopher & Banks and C.J. Banks brands. The sponsoring bank manages and extends credit to the Company's customers and is the sole owner of the accounts receivable generated under the program. As part of the program, the Company received a signing bonus of approximately $0.5 million from the sponsoring bank and also earns revenue based on card usage by its customers. The deferred signing bonus is included in other liabilities and is recognized in net sales ratably over the term of the contract. The other revenue based on customer usage of the card is recognized in net sales in the periods in which the related customer transaction occurs. During fiscal 2014, fiscal 2013 and fiscal 2012, the Company recognized approximately $0.7 million,  $0.6 million and $0.9 million, respectively, in net royalty revenue included in net sales. In addition, the sponsoring bank reimburses the Company for certain marketing expenditures related to the program, subject to an annual cap on the amount of reimbursable expenses.
	Lease termination costs
	Discounted liabilities for future lease costs and the fair value of related subleases of closed locations are recorded when the stores are closed prior to the expiration of the lease or execution of a lease termination agreement. In assessing the discounted liabilities for future costs of obligations related to closed stores, the Company makes assumptions regarding amounts of future subleases. If these assumptions or their related estimates change in the future, the Company may be required to record additional exit costs or reduce exit costs previously accrued. Actual settlements may vary substantially from recorded obligations.  As of January 31, 2015 and February 1, 2014, there was no lease termination liability recorded.
	Fair value measurements
	Fair value of financial instruments and selected non-financial assets and liabilities is measured in accordance with ASC 820-10, Fair Value Measurements. Fair value is defined as the exit price, or the amount that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants as of the measurement date. ASC 820-10 also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability, developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect management's assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances.
	The hierarchy is divided into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
	Certain of the Company's financial assets and liabilities are recorded at their carrying amounts which approximate fair value, based on their short-term nature. These financial assets and liabilities include cash and cash equivalents, accounts receivable and accounts payable. The Company measures its investments and certain of its long-lived assets at fair value.
	Stock-based compensation
	Stock-based compensation is accounted for in accordance with ASC 718-10 Stock Compensation. To calculate the estimated fair value of stock options on the date of grant, the Company uses the Black-Scholes option pricing model. The Black-Scholes option pricing model requires the Company to estimate key assumptions such as expected term, volatility, risk-free interest rates and dividend yield to determine the fair value of stock options, based on both historical information and management judgment regarding market factors and trends. The Company recognizes stock-based compensation expense on a straight-line basis over the corresponding vesting period of the entire award, net of estimated forfeiture rates. The Company estimates expected forfeitures of share-based awards at the grant date and recognizes compensation cost only for those awards expected to vest.
	In estimating expected forfeitures, the Company analyzes historical forfeiture and termination information and considers how future termination rates are expected to differ from historical termination rates. The Company ultimately adjusts this forfeiture assumption to actual forfeitures. Any changes in the forfeiture assumptions do not impact the total amount of expense ultimately recognized over the vesting period. Instead, different forfeiture assumptions only impact the timing of expense recognition over the vesting period. If the actual forfeitures differ from management estimates, additional adjustments to compensation expense are recorded.
	Restricted stock awards are generally subject to forfeiture if employment or service terminates prior to the lapse of the restrictions. In addition, certain restricted stock awards have performance-based vesting provisions and are subject to forfeiture, in whole or in part, if these performance conditions are not achieved. Management assesses, on an ongoing basis, the probability of whether the performance criteria will be achieved and, once it is deemed probable, compensation expense is recognized over the relevant performance period. For those awards not subject to performance criteria, the cost of the restricted stock awards is expensed, which is determined to be the fair market value of the shares at the date of grant, on a straight-line basis over the vesting period. Time-based grants of restricted stock participate in dividend payments to the extent dividends are declared and paid prior to vesting.
	Income taxes
	Income taxes are calculated in accordance with ASC 740, Income Taxes, which requires the use of the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future income taxes attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets depends on the generation of future taxable income during the period in which related temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in this assessment.  Deferred tax assets and liabilities are measured using the tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date of such change.
	Net income (loss) per common share
	The Company utilizes the two-class method of calculating earnings per share (“EPS”) where unvested share-based payment awards that contain non-forfeitable rights to receive dividends or dividend equivalents (whether paid or unpaid) are participating securities, and thus, are included in the two-class method of computing EPS. Participating securities include unvested employee restricted stock awards with time-based vesting, which receive non-forfeitable dividend payments.
	Basic EPS is computed based on the weighted average number of shares of common stock outstanding during the applicable period, while diluted EPS is computed based on the weighted average number of shares of common and common equivalent shares outstanding.
Segment reporting
The Company operates in the retail apparel industry in which it designs, sources and sells women’s apparel and accessories catering to customers generally ranging in age from 45 to 60 who are typically a portion of the female baby boomer demographic.  In fiscal 2013, the Company had identified two operating segments (Christopher & Banks stores and C. J. Banks stores) which it aggregated into one reportable segment as defined by ASC 280, Disclosures about Segments of an Enterprise and Related Information.  Given the Company’s migration to stores offering all sizes, in fiscal 2014 the Company has identified one operating segment (Retail Operations) and one corresponding reportable segment.  The Retail Operations reportable segment includes activity generated by the Company’s retail store locations (Christopher & Banks, C.J. Banks, Missy Petite Women ("MPW") and Outlet stores) as well as its eCommerce business. The “Corporate/Administrative” column in the segment disclosure in Note 18 – Segment Reporting, which primarily represents operating activity at the corporate office and distribution center facility, is presented to allow for reconciliation of segment-level net sales, operating income (loss) and total assets to consolidated net sales, operating income (loss) and total assets. Segment operating income (loss) includes only net sales, merchandise gross margin and direct store expenses with no allocation of corporate overhead. For details regarding the operating performance of the Company's reportable segment, see Note 18 - Segment Reporting.
Recently issued accounting pronouncements
In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40).  The amendments in this ASU provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures.  An entity’s management should evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or are available to be issued, when applicable).  ASU 2014-15 is effective for the Company beginning with the annual reporting for fiscal 2016, and reports for interim and annual periods thereafter.  Early adoption is permitted.  The Company is evaluating the impact of adoption of this ASU, but does not expect the adoption to have a material impact on its consolidated financial statements.
In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification (“ASC”) 605, Revenue Recognition”, as well as various other sections of the ASC, such as, but not limited to, ASC 340-20 Other Assets and Deferred Costs-Capitalized Advertising Costs.  The core principle of ASU 2014-09 is that an entity should recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  ASU 2014-09 is effective for the Company beginning with the annual reporting for fiscal 2017, including interim periods within that year, and is to be applied either retrospectively to each prior reporting period presented or with the cumulative effect recognized at the date of initial adoption as an adjustment to the opening balance of retained earnings (or other appropriate components of equity or net assets on the balance sheet).  Early adoption is not permitted.  The Company is in the process of evaluating the impact of ASU 2014-09, including the choice of application method upon adoption, on its consolidated financial statements.

Restructuring

Restructuring	12 Months Ended
	Jan. 31, 2015
Restructuring and Related Activities [Abstract]
Restructuring and Impairment	NOTE 2 — Restructuring
	Prior to fiscal 2012, the Board approved a plan to close approximately 100 stores, most of which were underperforming. Ultimately, 103 stores were identified for closure, and the occupancy costs for approximately half of the Company’s remaining stores were restructured.  Prior to fiscal 2012, the Company recorded approximately $21.2 million of restructuring and impairment charges related to this initiative.
	In fiscal 2012, the Company recorded a net credit of approximately $5.2 million related to restructuring and impairment costs. The Company recorded a non-cash benefit of approximately $6.5 million related to 55 stores, where the amount recorded for net lease termination liabilities exceeded the actual settlements negotiated with landlords. The Company recorded approximately $0.3 million of additional lease termination liabilities related to three stores closed in the first quarter of fiscal 2012. The Company also recorded approximately $0.4 million of non-cash asset impairment charges related to 14 stores the Company planned to continue to operate and four stores closed in January 2013. In addition, the Company recognized approximately $0.6 million of professional service fees related to the restructuring initiative.
	The Company did not have any additional payments or expenses related to the restructuring initiative in fiscal 2013 or fiscal 2014.
	The following table details information related to restructuring charges recorded in fiscal 2012 (in thousands):
				Lease
		Severance		Termination		Asset
		Accrual		Obligations		Impairment		Other		Total
	28-Jan-12	$	858	$	11,812	$	—	$	—	$	12,670
	Asset impairment charge		—		—		424		—		424
	Non-cash adjustments		—		-6,516		—		—		-6,516
	Restructuring charge		—		304		—		627		931
	Total charges (credits)		—		-6,212		424		627		-5,161
	Non-cash charges		—		—		-424		—		-424
	Deferred lease obligations on closed stores		—		244		—		—		244
	Cash payments		-858		-5,844		—		-627		-7,329
	2-Feb-13	$	—	$	—	$	—	$	—	$	—

Investments

Investments	12 Months Ended
	Jan. 31, 2015
Investments [Abstract]
Investments	NOTE 3 — Investments
	Investments as of January 31, 2015 consisted of the following (in thousands):
		Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	Short-term investments:
	Available-for-sale securities:
	Certificates of deposit	$	4,080	$	—	$	-2	$	4,078
	Commercial paper		7,384		3		-3		7,384
	Corporate bonds		1,615		1		—		1,616
	Municipal bonds		214		1		—		215
	Total short-term investments		13,293		5		-5		13,293
	Long-term investments:
	Available-for-sale securities:
	Corporate bonds		2,857		—		-4		2,853
	U.S. Agency securities		1,900		—		-1		1,899
	Total long-term investments		4,757		—		-5		4,752
	Total investments	$	18,050	$	5	$	-10	$	18,045
	Investments as of February 1, 2014, consisted of the following (in thousands):
		Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	Short-term investments:
	Available-for-sale securities:
	Certificates of deposit	$	5,391	$	—	$	-4	$	5,387
	Commercial paper		5,570		1		—		5,571
	Corporate bonds		815		2		—		817
	U.S. Agency securities		1,207		—		—		1,207
	Total short-term investments		12,983		3		-4		12,982
	Long-term investments:
	Available-for-sale securities:
	Municipal bonds		222		2		—		224
	Corporate bonds		1,652		2		—		1,654
	U.S. Agency securities		1,265		—		—		1,265
	Total long-term investments		3,139		4		—		3,143
	Total investments	$	16,122	$	7	$	-4	$	16,125
	The securities above were classified as available-for-sale as the Company did not enter into these investments for speculative purposes or intend to actively buy and sell the securities in order to generate profits on differences in price. The Company's primary investment objective is preservation of principal. During fiscal 2014, there were approximately $18.5 million in purchases of available-for-sale securities and maturities of available-for-sale securities were approximately $16.5 million. During fiscal 2013, there were approximately $24.5 million in purchases of available-for-sale securities and maturities of available-for-sale securities were approximately $8.3 million. There were no other-than-temporary impairments of available-for-sale securities during fiscal 2014 and fiscal 2013. See Note 13 - Fair Value Measurements, for fair value disclosures relating to the Company's investments.
	The following table summarizes the remaining contractual maturities of the Company’s available-for-sale securities (in thousands):
		January 31, 2015
	Due in one year or less	$	13,293
	Due after one year through five years		4,752
	Total investments	$	18,045

Accounts_Receivable

Accounts Receivable	12 Months Ended
	Jan. 31, 2015
Accounts Receivable, Net [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 4 — Accounts Receivable
	Accounts receivable consisted of the following (in thousands):
		January 31, 2015		February 1, 2014
	Credit card receivables	$	1,868	$	1,749
	Amounts due from landlords		1,505		272
	Other receivables		627		407
	Total accounts receivable	$	4,000	$	2,428
	Credit card receivables relate to amounts due from payment processing entities that are collected one to five days after the related sale transaction occurs.

Merchandise_Inventories

Merchandise Inventories	12 Months Ended
	Jan. 31, 2015
Inventory Disclosure [Abstract]
Merchandise Inventories and Sources of Supply	NOTE 5 — Merchandise Inventories
	Merchandise inventories consisted of the following (in thousands):
		January 31, 2015		February 1, 2014
	Merchandise - in store/eCommerce	$	33,534	$	35,324
	Merchandise - in transit		11,784		9,553
	Total merchandise inventories	$	45,318	$	44,877

Property_Equipment_and_Improve

Property, Equipment and Improvements, Net	12 Months Ended
	Jan. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Equipment and Improvements, Net	NOTE 6 — Property, Equipment and Improvements, Net
	Property, equipment and improvements, net consisted of the following (in thousands):
	Description	Estimated Useful Life	January 31, 2015		February 1, 2014
	Land	—	$	1,597	$	1,597
	Corporate office, distribution center and related building improvements	25 years		12,616		12,426
	Store leasehold improvements	Shorter of the useful life or term of related lease, typically 10 years		51,700		52,591
	Store furniture and fixtures	3 to 10 years		70,083		76,264
	Corporate office and distribution center furniture, fixtures and equipment	7 years		4,344		5,069
	Computer and point of sale hardware and software	3 to 5 years		32,888		34,808
	Construction in progress	—		2,721		1,892
	Total property, equipment and improvements, gross			175,949		184,647
	Less accumulated depreciation and amortization			-130,842		-148,189
	Total property, equipment and improvements, net		$	45,107	$	36,458
	Upon performing the annual impairment analysis, the Company determined that improvements and equipment at certain under-performing stores and stores identified for closure were impaired. As a result, the Company recorded asset impairments related to property, equipment and improvements of $0.2 million, $0.1 million and $0.4 million in fiscal 2014, fiscal 2013, and fiscal 2012, respectively. See Note 13  - Fair Value Measurements, for further detail.

Accrued_Liabilities

Accrued Liabilities	12 Months Ended
	Jan. 31, 2015
Accrued Liabilities
Accrued Liabilities	NOTE 7 — Accrued Liabilities
	Other accrued liabilities consisted of the following (in thousands):
		January 31, 2015		February 1, 2014
	Gift card and store credit liabilities	$	8,170	$	8,078
	Accrued Friendship Rewards Program loyalty liability		3,731		4,020
	Accrued income, sales and other taxes payable		1,578		1,517
	Accrued occupancy-related expenses		3,957		2,101
	Sales return reserve		1,077		835
	Other accrued liabilities		5,475		7,197
	Total accrued liabilities and other current liabilities	$	23,988	$	23,748

Credit_Facility

Credit Facility	12 Months Ended
	Jan. 31, 2015
Debt Disclosure [Abstract]
Credit Facility	NOTE 8 — Credit Facility
	On September 8, 2014, the Company entered into an amendment (the “Amendment”) to its existing Credit Agreement (the "Credit Facility") with Wells Fargo Bank, National Association ("Wells Fargo") as Lender. The Amendment, among other changes, (i) extended the term of the Credit Facility to September 8, 2019; (ii) reduced the rates at which borrowings will generally accrue interest and reduced the commitment fee rate; (iii) modified the calculation of the Borrowing Base to provide for potential additional capacity; the Borrowing Base serves as a limit on the overall amount of revolving loans and letters of credit that may be outstanding at any one time under the Credit Facility; (iv) excluded from the limitation on store closings the consolidation of Christopher & Banks stores and CJ Banks stores into MPW stores; and (v) modified the definition of Payment Conditions.  The Credit Facility provides the Company with revolving credit loans of up to $50.0 million in the aggregate, subject to a borrowing base formula based primarily on eligible credit card receivables, inventory and real estate, as such terms are defined in the Credit Facility, and up to $10.0 million of which may be drawn in the form of standby and documentary letters of credit.
	The Company recorded approximately $0.1 million of deferred financing costs in the third quarter of fiscal 2014 in connection with the Amendment. The deferred financing costs have been combined with the balance of the deferred financing costs remaining from the Credit Facility dated July 12, 2012, and all are recorded within other assets on the consolidated balance sheet and are being amortized as interest expense over the related term of the Amendment.
	Borrowings under the Credit Facility will generally accrue interest at a rate ranging from 1.50% to 1.75% over the London Interbank Offered Rate ("LIBOR") or 0.50% to 0.75% over the Wells Fargo Prime Rate based on the amount of Average Daily Availability for the Fiscal Quarter immediately preceding each Adjustment Date, as such term is defined in the Credit Facility. Letter of credit fees range from 1.00% to 1.75%, depending upon the Average Daily Availability for the Fiscal Quarter immediately preceding each Adjustment Date.
	The Credit Facility contains certain affirmative and negative covenants. The affirmative covenants include certain reporting requirements, maintenance of properties, payment of taxes and insurance, compliance with laws, environmental compliance and other provisions customary in such agreements. Negative covenants limit or restrict, among other things, secured and unsecured indebtedness, fundamental changes in the business, investments, liens and encumbrances, transactions with affiliates and other matters customarily restricted in such agreements. The sole financial covenant contained in the Credit Facility requires the Company to maintain Availability at least equal to the greater of (a) ten percent (10%) of the borrowing base or (b) $3.0 million.  In addition, the Credit Facility permits the payment of dividends to the Company's stockholders if certain financial conditions are met.  The Company was in compliance with all covenants and other financial provisions as of January 31, 2015.
	The Credit Facility contains events of default that include failure to pay principal or interest when due, failure to comply with the covenants set forth in the Credit Facility, bankruptcy events, cross-defaults and the occurrence of a change of control, subject to the grace periods, qualifications and thresholds as specified in the Credit Facility. If an event of default under the Credit Facility occurs and is continuing, the loan commitments may be terminated and the principal amount outstanding, together with all accrued unpaid interest and other amounts owing in respect thereof, may be declared immediately due and payable.
	The Company's obligations under the Credit Facility are secured by the assets of the Company and its subsidiaries pursuant to a Security Agreement, dated July 12, 2012 (the “Security Agreement”). Pursuant to the Security Agreement, the Company pledged substantially all of its assets as collateral security for the loans to be made pursuant to the Credit Facility, including accounts owed to the Company, bank accounts, inventory, other tangible and intangible personal property, intellectual property (including patents and trademarks), and stock or other evidences of ownership of 100% of all of the Company's subsidiaries.
	The Company had no revolving credit loan borrowings under the Credit Facility during fiscal 2014 or fiscal 2013, or under its previous credit facility in fiscal 2012. Historically, the Company's credit facility has been utilized only to open letters of credit. The total Borrowing Base at January 31, 2015, was approximately $29.3 million. As of January 31, 2015, the Company had open on-demand letters of credit of approximately $0.9 million. Accordingly, after reducing the Borrowing Base for the open letters of credit and the required minimum availability of $3.0 million, or 10.0% of the Borrowing Base, the net availability of revolving credit loans under the Credit Facility was approximately $25.4 million at January 31, 2015.

Stockholders_Equity_and_StockB

Stockholders Equity and Stock-Based Compensation	12 Months Ended
	Jan. 31, 2015
Equity [Abstract]
Stockholders' Equity and Stock-Based Compensation	NOTE 9 — Stockholder's Equity and Stock-Based Compensation
	Dividends
	The Credit Facility allows payment of dividends to the Company's stockholders if certain financial conditions are met.  No dividends were paid in fiscal 2014, fiscal 2013 or fiscal 2012.
	Stockholder rights plan
	On July 5, 2012, the Company adopted a stockholder rights plan (the “Rights Plan”). The Rights Plan was embodied in the Rights Agreement dated as of July 5, 2012 (the “Rights Agreement”), between the Company and its transfer agent (the “Rights Agent”). On July 5, 2012, the Board also authorized the issuance, and declared a dividend, of one preferred share purchase right (a “Right”) for each outstanding share of the Company’s common stock, par value $0.01 per share (the “Common Shares”), outstanding at the close of business on July 16, 2012.
	On May 9, 2013, the Company entered into an amendment to the Rights Agreement, as amended, by and between the Company and the Rights Agent. The Amendment changed the expiration date of the Rights to the close of business on May 9, 2013 and the Rights Agreement has been terminated and is of no further force and effect. The Rights were de-listed from the New York Stock Exchange and de-registered under the Securities Exchange Act of 1934, as amended.
	Stock-based compensation
	The Company maintains the following stock plans approved by stockholders: the 2005 Stock Incentive Plan (the "2005 Plan"), the 2013 Directors' Equity Incentive Plan (the "2013 Plan") and the 2014 Stock Incentive Plan (the “2014 Plan”). Under the 2014 Plan and the 2013 Plan, the Company may grant options to purchase common stock to employees and non-employee members of the Board, respectively, at a price not less than 100% of the fair market value of the common stock on the option grant date. In general, options granted to employees vest over three years and are exercisable up to 10 years from the date of grant, and options granted to Directors vest ratably over approximately 30 months and are exercisable up to 10 years from the grant date.
	The Company may also grant shares of restricted stock to its employees and non-employee members of the Board. The grantee cannot transfer the shares before the respective shares vest. Shares of nonvested restricted stock are considered to be currently issued and outstanding. Restricted stock grants to employees generally have original vesting schedules of one to three years, while restricted grants to Directors typically vest approximately one year after the date of grant.
	Approximately 5.0 million, 0.5 million and 3.9 million shares were authorized for issuance under the 2005 Plan, the 2013 Plan and the 2014 Plan, respectively. As of January 31, 2015, there were approximately 0.3 million and 3.9 million shares available for future grant under the 2013 Plan and the 2014 Plan, respectively. In addition, as of January 31, 2015, there are approximately 1.5 million options outstanding which were granted to our Chief Executive Officer outside of the above plans as an inducement to employment.    No additional shares may be granted under the 2005 Plan.
	Black-Scholes assumptions
	The Company uses the Black-Scholes option-pricing model to value stock options for grants to employees and non-employee directors. Using this option-pricing model, the fair value of each stock option award is estimated on the date of grant and is expensed on a straight-line basis over the vesting period, as the stock options are subject to pro-rata vesting. The expected volatility assumption is based on the historical volatility of its stock over a term equal to the expected term of the option granted. The expected term of stock option awards granted is derived from the Company’s historical experience and represents the period of time that awards are expected to be outstanding. The risk-free interest rate is based on the implied yield on a U.S. Treasury constant maturity with a remaining term equal to the expected term of the option granted.
	The table below shows the weighted average assumptions relating to the valuation of stock options granted during fiscal 2014, fiscal 2013 and fiscal 2012.
		Fiscal 2014	Fiscal 2013		Fiscal 2012
	Expected dividend yield	—%	—%		—%
	Expected volatility	59.59%	70.08-75.66%		73.19%
	Risk-free interest rate	1.73%	0.76-1.37%		0.27-1.05%
	Expected term	5.00 years	5.00 years		4.40 years
	Stock-Based Compensation Activity — Stock Options
	The following tables present a summary of stock option activity for fiscal 2014:
						Aggregate		Weighted Average
			Weighted Average			Intrinsic Value (in		Remaining
		Number of Shares	Exercise Price			thousands)		Contractual Life
	Outstanding, beginning of period	3,549,901		4.68
	Granted	5,500		8.80
	Exercised	-822,718		3.30
	Canceled - Vested	-52,900		14.86
	Canceled - Unvested (Forfeited)	-37,009		2.92
	Outstanding, end of period	2,642,774	$	4.94		$	4,015	6.91 years
	Exercisable, end of period	1,952,854	$	5.49		$	2,691	6.62 years
			Weighted Average
			Grant Date
		Number of Shares	Fair Value
	Nonvested, beginning of period	2,003,321	$	1.83
	Granted	5,500		4.55
	Vested	-1,281,892		1.71
	Forfeited	-37,009		1.68
	Nonvested, end of period	689,920		2.08
	The weighted average fair value for options granted during fiscal 2014, fiscal 2013 and fiscal 2012 was $4.55,  $3.80 and $1.70, respectively. The fair value of options vesting during fiscal 2014, fiscal 2013 and fiscal 2012 was approximately $1.71,  $2.06 and $2.50, respectively. The aggregate intrinsic value of options exercised during fiscal 2014 and fiscal 2013 was approximately $4.6 million and $0.2 million, respectively. There were no options exercised during fiscal 2012.
	The total pre-tax compensation expense related to all stock-based awards for fiscal 2014, fiscal 2013 and fiscal 2012 was approximately $2.3 million, $2.8 million and $2.3 million, respectively. Stock-based compensation expense is included in merchandise, buying and occupancy expenses for the buying and distribution employees, and in selling, general and administrative expense for all other employees.
	As of January 31, 2015, there was approximately $1.0 million of total unrecognized compensation expense related to nonvested stock options granted, which is expected to be recognized over a weighted average period of approximately 0.85  years.
	Stock-Based Compensation Activity — Restricted Stock
	The following table presents a summary of restricted stock activity for fiscal 2014:
			Weighted Average			Aggregate
			Grant Date Fair			Intrinsic Value
		Number of Shares	Value			(in thousands)
	Nonvested, beginning of period	159,826	$	6.30
	Granted	57,958		8.89
	Vested	-119,578		6.44
	Forfeited	-6,565		5.23
	Nonvested, end of period	91,641		7.84		$	477
	The weighted average fair value for restricted stock granted during fiscal 2014, fiscal 2013 and fiscal 2012 was $8.89,  $6.51 and $1.68, respectively. The total fair value of restricted stock vesting during fiscal 2014, fiscal 2013 and fiscal 2012 was approximately $0.8 million, $0.6 million and $2.5 million, respectively. The aggregate intrinsic value of restricted stock vesting during fiscal 2014, fiscal 2013 and fiscal 2012 was approximately $0.6 million, $0.6 million and $3.7 million, respectively.
	As of January 31, 2015, there was approximately $0.3 million of unrecognized stock-based compensation expense related to nonvested restricted stock awards, which is expected to be recognized over a weighted average period of approximately 0.7 years.
	Other Stock-Based Awards
	During fiscal 2014, the Company made performance share awards to a limited number of executive-level employees which entitles these employees to receive a specified number of shares of the Company’s common stock on vesting dates, provided that cumulative two-year and/or three-year targets are achieved.  The cumulative targets involve operating margin, net sales growth and total stockholder return vs. a specified peer group.  Management estimates the fair value of performance shares awards based on the market price of the underlying stock on the date of grant for net sales growth and operating margin targets.  The Company utilized a Monte Carlo simulation model to determine the fair value of the performance shares for total stockholder return.  The target grants (as revised for non-vested forfeitures) currently approximate 114,000 and 171,000 shares, respectively, with a weighted average grant-date fair value of $6.33 per share.  The actual number of shares issued on the vesting dates could range from zero to 200% of target, depending upon actual performance achieved.  Based on the market price of the Company’s common stock at January 31, 2015, the maximum future value that could be awarded on the vesting dates was $1.2 million for the two-year target awards and $1.8 million for the three-year target awards.

Other_Income_Expense

Other Income (Expense)	12 Months Ended
	Jan. 31, 2015
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	NOTE 10 — Other Income (Expense)
	Other income (expense) consisted of the following for the periods identified below (in thousands):
		Fiscal 2014		Fiscal 2013		Fiscal 2012
	Interest expense	$	-258	$	-253	$	-133
	Interest income, net		68		62		43
	Gain (loss) on investments carried at fair value		-1		—		76
	Total other income (expense)	$	-191	$	-191	$	-14

Income_Taxes

Income Taxes	12 Months Ended
	Jan. 31, 2015
Income Tax Disclosure
Income Taxes	NOTE 11 — Income Taxes
	The provision for income taxes consisted of the following for the fiscal periods identified below (in thousands):
		Fiscal 2014			Fiscal 2013			Fiscal 2012
	Current:
	Federal tax expense (benefit)	$	-248		$	107		$	-127
	State tax expense (benefit)		283			-112			184
	Current tax expense (benefit)		35			-5			57
	Deferred tax expense (benefit)		-37,937			—			40
	Income tax provision (benefit)	$	-37,902		$	-5		$	97
	The following presents a reconciliation of income tax computed at the U.S. statutory rate to the effective income tax rate for the fiscal periods ended:
		January 31, 2015		February 1, 2014		February 2, 2013
	Federal income tax (benefit) at statutory rate	35.0	%	35.0	%	-35	%
	State income tax, net of federal benefit	4.6		0.4		0.5
	Change in valuation allowance	-447.6		-33.7		34.8
	Reserve for unrecognized tax benefits	0.6		-2.4		-0.5
	Officer compensation expense	—		—		0.3
	Other	-3.4		0.6		0.5
	Effective income tax rate	-410.8	%	-0.1	%	0.6	%
	Significant components of the Company's deferred income tax assets and liabilities are as follows (in thousands):
		January 31, 2015			February 1, 2014
	Deferred tax assets:
	Accrued Friendship Rewards loyalty liability	$	1,180		$	1,301
	Accrued incentives		—			1,434
	Merchandise inventories		1,291			1,351
	Deferred rent and deferred lease incentives		6,426			3,418
	Stock-based compensation expense		2,152			2,303
	Net operating loss carryforwards		24,875			26,857
	Contribution carryforwards		159			202
	Tax credit carryforwards		706			984
	Depreciation and amortization		46			2,651
	Other accrued liabilities		1,555			2,169
	Total deferred tax assets		38,390			42,670
	Less: Valuation allowance		-28			-42,223
	Deferred tax assets, net of valuation allowance		38,362			447
	Deferred tax liabilities:
	Other		-424			-447
	Total deferred tax liabilities		-424			-447
	Net deferred tax assets	$	37,938		$	—
	Deferred income tax assets represent potential future income tax benefits. Realization of these assets is ultimately dependent upon future taxable income.  ASC 740 Income Taxes requires that deferred tax assets be reduced by a valuation allowance if, based on all available evidence, it is considered more likely than not that some or all of the recorded deferred tax assets will not be realized in a future period. Forming a conclusion that a valuation allowance is not needed is difficult when negative evidence such as cumulative losses exists. As a result of management's evaluation in fiscal 2011, a non-cash provision of $10.6 million was recognized to establish a valuation allowance against deferred tax assets as there was insufficient positive evidence to overcome the negative evidence related to the Company's cumulative losses. In the fourth quarter of fiscal 2014, the Company released the vast majority of the valuation allowance based on two consecutive years of profitability, three years of cumulative positive earnings achieved in the fourth quarter of fiscal 2014 and the Company’s forecast of continued profitability in fiscal 2015.  A small valuation allowance was retained for state net operating loss carryforwards that may expire before they are utilized.  The release of the valuation allowance resulted in a $41.3 million benefit to the income tax provision in fiscal 2014.
	As of January 31, 2015, the Company has federal and state net operating loss carryforwards which will reduce future taxable income. Approximately $24.7 million in net federal tax benefits are available from these federal loss carryforwards of approximately $70.5 million, and an additional $0.7 million is available in net tax credit carryforwards. Included in the federal net operating loss is approximately $5.6 million of loss generated by deductions related to equity-based compensation, the tax effect of which will be recorded to additional paid in capital when utilized. The state loss carryforwards will result in net state tax benefits of approximately $2.2 million. The federal net operating loss carryovers will expire in November 2032 and beyond. The Company has analyzed equity ownership changes and determined its net operating losses will not be limited under IRC Section 382.  The state net operating loss carryforwards will expire in November 2015 and beyond. Additionally, the Company has charitable contribution carryforwards that will expire in 2015 and beyond.
	A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):
	Balance at January 28, 2012	$	856
	Additions based on tax positions related to the current year		283
	Reductions for tax positions of previous years		-39
	Reductions for tax positions of previous years due to lapse of applicable statute of limitations		-107
	Balance at February 2, 2013		993
	Additions based on tax positions related to the current year		152
	Reductions for tax positions of previous years		-152
	Reductions for tax positions of previous years due to lapse of applicable statute of limitations		-236
	Balance at February 1, 2014		757
	Additions based on tax positions related to the current year		180
	Additions for tax positions of previous years		24
	Reductions for tax positions of previous years due to lapse of applicable statute of limitations		-85
	Balance at January 31, 2015	$	876
	The Company's liability for unrecognized tax benefits is recorded within other non-current liabilities. The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate as of January 31, 2015 and February 1, 2014 were $0.6 million and $0.5 million, respectively.
	Interest and penalties related to unrecognized tax benefits of approximately $53 thousand, $47 thousand and $42 thousand were recognized as components of income tax expense in fiscal 2014, fiscal 2013 and fiscal 2012, respectively. At January 31, 2015 and February 1, 2014, approximately $0.2 million and $0.1 million, respectively, was accrued for the potential payment of interest and penalties.
	The Company and its subsidiaries are subject to U.S. federal income taxes and the income tax obligations of various state and local jurisdictions. Fiscal 2011 is currently under exam by the Internal Revenue Service. Periods after fiscal 2011 remain subject to examination by the Internal Revenue Service. With few exceptions, the Company is not subject to state income tax examination by tax authorities for taxable years prior to fiscal 2010.  As of January 31, 2015, the Company had no other ongoing audits in various jurisdictions and does not expect the liability for unrecognized tax benefits to significantly increase or decrease in the next twelve months.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Jan. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 12 — Earnings Per Share
	The calculation of EPS shown below excludes the income attributable to participating securities from the numerator.
		Fiscal 2014		Fiscal 2013		Fiscal 2012
	Numerator (in thousands):
	Net income (loss) attributable to Christopher & Banks Corporation	$	47,126	$	8,690	$	-16,076
	Income allocated to participating securities		-155		-32		—
	Net income (loss) available to common stockholders	$	46,971	$	8,658	$	-16,076
	Denominator (in thousands):
	Weighted average common shares outstanding - basic		36,819		36,246		35,694
	Dilutive shares		934		898		—
	Weighted average common and common equivalent shares outstanding - diluted		37,753		37,144		35,694
	Net earnings per common share:
	Basic	$	1.28	$	0.24	$	-0.45
	Diluted	$	1.24	$	0.23	$	-0.45
	Total stock options of approximately 0.3 million, 0.5 million and 3.7 million were excluded from the shares used in the computation of diluted earnings per share for fiscal 2014, fiscal 2013 and fiscal 2012, respectively, as they were anti-dilutive.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Jan. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 13 — Fair Value Measurements
	Assets that are Measured at Fair Value on a Recurring Basis:
	The following tables provide information by level for the Company's available-for-sale securities that were measured at fair value on a recurring basis (in thousands):
					Fair Value Measurements
	As of January 31, 2015:				Using Inputs Considered as
		Fair Value			Level 1		Level 2		Level 3
	Short-term investments:
	Certificates of deposit	$	4,078		$	—	$	4,078	$	—
	Commercial paper		7,384			—		7,384		—
	Corporate bonds		1,616			—		1,616		—
	Municipal bonds		215			—		215		—
	Total current assets		13,293			—		13,293		—
	Long-term investments:
	Corporate bonds		2,853			—		2,853		—
	U.S. Agency securities		1,899			—		1,899		—
	Total non-current assets		4,752			—		4,752		—
	Total assets	$	18,045		$	—	$	18,045	$	—
					Fair Value Measurements
	As of February 1, 2014:				Using Inputs Considered as
		Fair Value			Level 1		Level 2		Level 3
	Short-term investments:
	Certificates of deposit	$	5,387		$	—	$	5,387	$	—
	Commercial paper		5,571			—		5,571		—
	Corporate bonds		817			—		817		—
	U.S. Agency securities		1,207			—		1,207		—
	Total current assets		12,982			—		12,982		—
	Long-term investments:
	Municipal bonds		224			—		224		—
	Corporate bonds		1,654			—		1,654		—
	U.S. Agency securities		1,265			—		1,265		—
	Total non-current assets		3,143			—		3,143		—
	Total assets	$	16,125		$	—	$	16,125	$	—
	As of January 31, 2015, the Company's available-for-sale securities were valued based on quoted prices for similar assets in active markets or quoted prices for identical or similar assets in markets in which there were fewer transactions.  There were no transfers of assets between Level 1 and Level 2 of the fair value measurement hierarchy during fiscal 2014. Consistent with Company policy, it recognizes transfers into levels and transfers out of levels on the date of the event or when a change in circumstances causes a transfer.
	Assets that are Measured at Fair Value on a Non-recurring Basis:
	The following table summarizes certain information for non-financial assets as of January 31, 2015 and February 1, 2014 that are measured at fair value on a nonrecurring basis in periods subsequent to initial recognition into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date (in thousands):
					Fair Value Measurements
					Using Inputs Considered as
	Description	Fair Value			Level 1		Level 2		Level 3		Realized Losses
	Assets as of January 31, 2015
	Long-lived assets held and used	$	54		$	—	$	—	$	54	$	-216
	Assets as of February 1, 2014
	Long-lived assets held and used	$	5		$	—	$	—	$	5	$	-140
	The Company recorded approximately $0.2 million in impairment charges on long-lived assets held and used with a carrying value of approximately $0.3 million, resulting in a fair value of approximately $0.1 million, which was included in earnings for fiscal 2014. Long-lived assets held and used with a carrying amount of $0.1 million were written down to their fair value of $5 thousand, resulting in an impairment charge of $0.1 million, which was included in earnings for fiscal 2013.
	The fair value of the long-lived assets above was determined using a discounted cash flow approach as discussed in Note 1 - Nature of Business and Significant Accounting Policies. The fair value measurement of the long-lived assets encompasses the following significant unobservable inputs:
		Range
	Unobservable Inputs	Fiscal 2014		Fiscal 2013
	Weighted Average Cost of Capital (WACC)	15%		15.80%
	Annual sales growth	(3%) to 3.5%		3% to 9.8%

Employee_Benefit_Plans_and_Emp

Employee Benefit Plans and Employment Agreements	12 Months Ended
	Jan. 31, 2015
Employee Benefit Plans and Employment Agreements [Abstract]
Compensation and Employee Benefit Plans [Text Block]	NOTE 14 — Employee Benefit Plans and Employment Agreements
	401(k) Plan
	The Company has established a defined contribution plan qualified under Section 401(k) of the Internal Revenue Code for the benefit of all employees who meet certain eligibility requirements, which are primarily age, length of service and hours of service. The plan allows eligible employees to invest from 1% to 60% of their compensation, subject to dollar limits as established by the federal government. The plan allows for discretionary Company matching contributions. Effective March 8, 2009, the Company discontinued its discretionary matching contributions. The Company reinstated its discretionary matching contributions during fiscal 2013, and made matching contributions totaling approximately $0.5 million and $0.2 million for fiscal 2014 and fiscal 2013, respectively. There were no Company contributions made during fiscal 2012. The Company does not offer any other post-retirement, post-employment or pension benefits to directors or employees.
	Severance Agreements
	In April 2011, the Company entered into new severance agreements with certain Executive Officers. These severance agreements provide that the individual is and remains an at-will employee and thus may be terminated at any time with or without “cause” as defined in the agreement. If the employee is terminated “without cause” and executes a general release of claims in favor of the Company, the Company is obligated to pay the executive officer a severance payment in the aggregate equal to six months of such executive officer's salary, and the employee is required to refrain from engaging in certain competitive activities or soliciting employees to terminate their employment with the Company for a period of one year following termination of such executive officer's employment.
	Management Retention Plan
	On July 5, 2012, the Compensation Committee (the “Committee”) of the Board approved a Management Retention Plan (the “Plan”) and the entry into retention agreements (the “Retention Agreements”), issued pursuant to the Plan, with certain members of management, including the Chief Financial Officer and one additional “named executive officer,” as determined pursuant to Item 402 of Regulation S-K for purposes of the Company’s Proxy Statement filed May 15, 2012 (the “Proxy Statement”). The Company had received an unsolicited offer to acquire the Company, which the Board and the Committee recognized can be highly disruptive to the Company’s day-to-day operations, and may cause certain key members of management to consider other employment opportunities. In order to ensure that the most critical members of management remain fully engaged and focused on driving improved performance at the Company for the benefit of the Company’s stockholders, the Committee approved and adopted the Plan and the Retention Agreements.
	The Retention Agreements provided for a lump-sum cash award. The term of the award was for one year from adoption, unless accelerated due to a change in control. Pursuant to the Plan and the Retention Agreements, if there were a change in control event prior to the completion of the term, and a recipient’s employment were terminated without “cause” or with “good reason” (as each is defined in the Plan) prior to the completion of the term, the recipient would receive the award payment in full upon such termination.
	The amount of the award for each of the recipients was equal to such recipient’s annualized base salary without regard to bonuses and other incentive compensation in effect immediately prior to the distribution, but not less than such recipient’s highest annualized base salary in effect within the 12-month period immediately preceding the change in control.
	The awards under the Management Retention Plan were paid in July 2013.

Lease_Commitments_Lease_Commit

Lease Commitments Lease Commitments	12 Months Ended
	Jan. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments Disclosure [Text Block]	NOTE 15 — Lease Commitments
	The Company leases its store locations and vehicles under operating leases. The store lease terms, including rental period, renewal options, escalation clauses and rent as a percentage of sales, vary among the leases. Most store leases require the Company to pay real estate taxes and common area maintenance charges.
	Total rental expense for all leases was as follows for the fiscal periods ended (in thousands):
		Fiscal 2014		Fiscal 2013		Fiscal 2012
	Minimum rent	$	38,720	$	32,547	$	33,378
	Contingent rent		3,914		7,602		6,980
	Maintenance, taxes and other		17,577		17,766		20,651
	Amortization of deferred lease incentives		-2,229		-2,383		-3,237
	Total rent expense	$	57,982	$	55,532	$	57,772
	Future minimum rental commitments for operating leases where the Company has a defined occupancy date are as follows (in thousands):
		Operating Leases
		Retail Store		Vehicles/
		Facilities		Other		Total
	Less than 12 months	$	34,866	$	272	$	35,138
	12 - 24 months		29,254		115		29,369
	25 - 36 months		22,629		18		22,647
	37 - 48 months		19,533		—		19,533
	49 - 60 months		16,357		—		16,357
	Greater than 60 months		48,977		—		48,977
	Total minimum lease payments	$	171,616	$	405	$	172,021
	In addition to the amounts listed above, the Company has approximately $7.2 million of minimum rental commitments for locations where an occupancy date has not yet been established with the landlord.  These leases are generally each for a 10-year term.

Legal_Proceedings

Legal Proceedings	12 Months Ended
	Jan. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	NOTE 16 — Legal Proceedings
	The Company is subject, from time to time, to various claims, lawsuits or actions that arise in the ordinary course of business.  Although the amount of any liability that could arise with respect to any current proceedings cannot, in management’s opinion, be accurately predicted, any such liability is not expected to have a material adverse impact on the Company's financial position, results of operations or liquidity.

Sources_of_Supply

Sources of Supply	12 Months Ended
	Jan. 31, 2015
Sources of Supply [Abstract]
Concentration Risk Disclosure [Text Block]	NOTE 17 — Sources of Supply
	The Company's ten largest vendors accounted for approximately 70%,  70% and 56% of total merchandise purchases in fiscal 2014, fiscal 2013 and fiscal 2012, respectively. One of the Company’s suppliers accounted for approximately 28%,  19%, and 18% of merchandise purchases during fiscal 2014, fiscal 2013 and fiscal 2012, respectively. Another supplier accounted for approximately 10% and 11% of merchandise purchases during fiscal 2014 and fiscal 2013, respectively. Although the Company has strong relationships with these vendors, there can be no assurance that these relationships can be maintained in the future or that these vendors will continue to supply merchandise to the Company. If there should be any significant disruption in the supply of merchandise from these vendors, management believes that production could be shifted to other suppliers so as to continue to secure the required volume of product. Nevertheless, it is possible that any significant disruption in supply could have a material adverse impact on the Company's financial position or results of operations.

Segment_Reporting

Segment Reporting	12 Months Ended
	Jan. 31, 2015
Segment Reporting [Abstract]
Segment Reporting	NOTE 18 — Segment Reporting
	In the table below, the Retail Operations reportable segment includes activity generated by the Company’s retail store locations (Christopher & Banks, C.J. Banks, Missy Petite Women ("MPW") and Outlet stores) as well as its eCommerce business. The “Corporate/Administrative” column, which primarily represents operating activity at the corporate office and distribution center facility, is presented to allow for reconciliation of segment-level net sales, operating income (loss) and total assets to consolidated net sales, operating income (loss) and total assets. Segment operating income (loss) includes only net sales, merchandise gross margin and direct store expenses with no allocation of corporate overhead.
	During fiscal 2014, fiscal 2013 and fiscal 2012, the Company recorded a net charge (benefit) of approximately $0.2 million, $0.1 million and $(5.2) million, respectively, related to restructuring and impairment which included $0.2 million, $0.1 million and $0.4 million, respectively of expense related to store-level asset impairment charges included in the operating income (loss) for the Retail Operations segment.
		Retail		Corporate/
	(in thousands)	Operations		Administrative		Consolidated
	Fiscal 2014
	Net sales	$	418,584	$	—	$	418,584
	Depreciation and amortization		9,166		2,620		11,786
	Operating income (loss)		60,830		-51,415		9,415
	Total assets		95,538		100,499		196,037
	Fiscal 2013
	Net sales	$	435,754	$	—	$	435,754
	Depreciation and amortization		9,757		3,411		13,168
	Operating income (loss)		63,633		-54,757		8,876
	Total assets		95,631		53,347		148,978
	Fiscal 2012
	Net sales	$	430,302	$	—	$	430,302
	Depreciation and amortization		14,122		4,473		18,595
	Operating income (loss)		31,363		-47,328		-15,965
	Total assets		96,454		39,478		135,932

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Jan. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	NOTE 19 — Related-Party Transactions
	The Company or its subsidiaries have for the past several years purchased goods from or through G-III Apparel Group Ltd. (“G-III”) or its related entities. On January 3, 2011, Morris Goldfarb, the Chairman of the Board and Chief Executive Officer of G-III, became a director of the Company. On June 27, 2013, Mr. Goldfarb ceased to be a member of the Board as he did not stand for re-election at the Company's annual meeting of stockholders in June 2013. Payments made by the Company and its subsidiaries to G-III and its related entities aggregated approximately $1.1 million, $1.2 million and $1.4 million for fiscal 2014, fiscal 2013 and fiscal 2012, respectively. As of January 31, 2015 and February 1, 2014, the Company had a balance due to G-III or its related entities of approximately $12 thousand and $0.1 million, respectively.

Quarterly_Financial_Data

Quarterly Financial Data	12 Months Ended
	Jan. 31, 2015
Quarterly Financial Data [Abstract]
Quarterly Financial Information [Text Block]	NOTE 20 — Quarterly Financial Data (Unaudited)
			Fiscal 2014 Quarters (1)
	(in thousands, except per share data)		First		Second		Third		Fourth (2)
	Net sales		$	103,366	$	106,633	$	110,610	$	97,975
	Operating income (loss)			2,792		3,250		9,344		-5,971
	Net income			2,616		3,362		8,983		32,164
	Net income per share data:
	Basic		$	0.07	$	0.09	$	0.24	$	0.87
	Diluted		$	0.07	$	0.09	$	0.24	$	0.86
			Fiscal 2013 Quarters (1)
	(in thousands, except per share data)		First		Second		Third		Fourth
	Net sales		$	108,519	$	104,233	$	118,077	$	104,925
	Operating income (loss)			782		-1		8,613		-518
	Net income (loss)			629		-265		8,612		-286
	Net income (loss) per share data:
	Basic		$	0.02	$	-0.01	$	0.24	$	-0.01
	Diluted		$	0.02	$	-0.01	$	0.23	$	-0.01
		-1		The summation of quarterly per share data may not equate to the calculation for the full fiscal year as quarterly calculations are performed on a discrete basis.
		-2		As described in Note 1, in connection with the preparation of the Company’s consolidated financial statements for the fiscal year ended January 31, 2015, the Company determined that its calculation of deferred rent expense was incorrect.  The Company corrected the error in the fourth quarter of fiscal 2014, which resulted in an increase to rent expense of approximately $3.6 million.  The effect of the correction was to decrease operating income for the 2014 fourth quarter by approximately $3.6 million; net income for the fourth quarter was reduced by approximately $2.2 million.  The Company has concluded that this correction is immaterial to the related consolidated financial statements as a whole.

Nature_of_Business_and_Signifi1

Nature of Business and Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 31, 2015
Nature of Business and Significant Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Fiscal year and basis of presentation
	The Company follows the standard fiscal year of the retail industry, which is a fifty-two or fifty-three week period ending on the Saturday closest to January 31, and is designated by the calendar year in which the fiscal year commences.  The fiscal years ended January 31, 2015 (“fiscal 2014”), February 1, 2014 (“fiscal 2013”) and February 2, 2013 ("fiscal 2012") consisted of fifty-two weeks, fifty-two weeks and fifty-three weeks, respectively.
	The consolidated financial statements include the accounts of Christopher & Banks Corporation and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
	Certain reclassifications have been made to prior period amounts to conform to the current period presentation.  None of the reclassifications had a material effect on the Company’s financial position, results of operations or cash flows in any period.
Use of Estimates, Policy [Policy Text Block]	Use of estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during reporting periods. As a result, actual results could differ because of the use of these estimates and assumptions.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and cash equivalents
	Cash and cash equivalents consist of cash on hand and in banks and investments purchased with an original maturity of ninety days or less.
Investment, Policy [Policy Text Block]	Investments
	Investments are accounted for in accordance with Accounting Standards Codification ("ASC") 320-10, Investments — Debt and Equity Securities. At January 31, 2015 and February 1, 2014, the Company's investment balances consisted solely of available-for-sale securities and were valued at fair value in accordance with ASC 820-10 Fair Value Measurements.
	Available-for-sale securities are carried at fair value with unrealized gains and losses reported as a component of stockholders’ equity as accumulated other comprehensive income (loss), net of tax. Fair value for available-for-sale securities is based on quoted prices for similar assets in active markets or quoted prices for identical or similar assets in markets in which there were fewer transactions. Amortization of premiums or discounts arising at acquisition, and gains or losses on the disposition of available-for-sale securities are reported as other income (expense) in the consolidated statements of operations. Realized gains and losses, if any, are calculated on the specific identification method and are included in other income (expense) in the consolidated statements of operations.
	Available-for-sale securities are reviewed for possible impairment at least quarterly, or more frequently if circumstances arise which may indicate impairment. When the fair value of the securities declines below the amortized cost basis, impairment is indicated and it must be determined whether it is other than temporary. Impairment is considered to be other than temporary if the Company: (i) intends to sell the security, (ii) will more likely than not be forced to sell the security before recovering its cost, or (iii) does not expect to recover the security’s amortized cost basis. If the decline in fair value is considered other than temporary, the cost basis of the security is adjusted to its fair market value and the realized loss is reported in earnings.  Subsequent increases or decreases in fair value are reported in equity as accumulated other comprehensive income (loss).
Inventory, Policy [Policy Text Block]	Inventory valuation
	Merchandise inventories, all of which are finished goods, are stated at the lower of cost or market utilizing the retail inventory method. The Company manages its inventory levels and uses markdowns to clear merchandise. Decisions to mark down merchandise are based on a number of factors including the current rate of sale, quantity on hand and age of the inventory. The Company estimates and records markdowns when necessary to liquidate aged inventory. Actual markdowns taken are regularly compared against previous estimates and factored into future estimates.
Property, Plant and Equipment, Policy [Policy Text Block]	Property, equipment and improvements, net
	Property, equipment and improvements are initially recorded at cost. Property and equipment is depreciated on a straight-line basis over its estimated useful life; 3 to 5 years for computer hardware and software, 3 to 10 years for store furniture and fixtures, 7 years for corporate and distribution center furniture, fixtures and other equipment, and 25 years for corporate office and distribution center and related building improvements. Store leasehold improvements are amortized over the shorter of the useful life or term of the related lease, which is typically 10 years.
	Repairs and maintenance which do not extend an asset’s useful life are expensed as incurred. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts, and any resulting gain or loss is reflected in income for that period.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Long-lived assets
	The Company reviews long-lived assets with definite lives at least annually or whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable in accordance with ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets.   This review includes the evaluation of individual under-performing stores and assessment of the recoverability of the carrying value of the assets related to the store. Future cash flows are projected for the remaining lease life considering such factors as future sales levels, merchandise margins, operating income, changes in occupancy expenses other than base rent and other expenses, as well as the overall operating environment specific to that store. If the estimated undiscounted future cash flows are less than the carrying value of the assets, an impairment charge is recorded for the difference between the assets’ fair value and carrying value.
	Fair value is determined by a discounted cash flow analysis. In determining future cash flows, the Company uses its best estimate of future operating results and utilizes market participant based assumptions. Consistent with current operating plans, a small decrease in same-store sales was assumed for one year, followed by gradual sales improvements in succeeding years. Subsequent future growth in same-store sales is based on historical same-store sales growth rates.
	The projection of future cash flows involves the use of significant estimates and assumptions, including estimated sales, merchandise margin and expense levels, and the selection of an appropriate discount rate, therefore differences in circumstances or estimates could produce different results. The current economic environment and competitive retail landscape make it possible that additional long-lived asset impairments could be identified and recorded in future periods.
	Included in the review is the assessment of the recoverability of the carrying value of the assets related to the corporate office and distribution center. As these assets do not have identifiable cash flows that are largely independent of store cash flows, the Company utilized a residual approach where the carrying value of the corporate office and distribution center assets are compared with the estimated undiscounted future cash flows available from the stores remaining after any impairment losses. If the estimated undiscounted future cash flows are less than the carrying value of the assets related to the corporate office and distribution center, an impairment charge is recorded for the difference between the assets’ fair value and carrying value.
Treasury Stock [Policy Text Block]	Common stock held in treasury
	Treasury stock is accounted for under the cost method, whereby stockholders’ equity is reduced for the total cost of the shares repurchased.
Revenue Recognition, Policy [Policy Text Block]	Revenue recognition
	Sales are recognized at the point of purchase when a customer takes possession of the merchandise and pays for the purchase with cash, credit card, debit card or gift card. The Company's eCommerce operation records revenue upon the estimated date the customer receives the merchandise. Shipping and handling revenues are included in net sales. Sales are recognized net of a sales return reserve, which is based on historical sales return data and is not material. Sales taxes collected from customers are remitted to the appropriate taxing jurisdictions and are excluded from net sales.
	Gift cards are recorded as a liability when issued and until they are redeemed, at which point a sale is recorded. Unredeemed gift cards (“gift card breakage”) is recognized as a reduction of merchandise, buying and occupancy costs when the likelihood of a gift card being redeemed by a customer in the future is deemed remote and the Company determines that there is no legal obligation to remit the value of the unredeemed gift card to any state or local jurisdiction as unclaimed or abandoned property.  The Company utilizes historical redemption patterns in order to estimate the rate and timing of breakage associated with gift cards.  Based on historical redemption patterns, we currently recognize breakage for a portion of the gift card balances that remain outstanding following 36 months of issuance.
Cost of Sales, Vendor Allowances, Policy [Policy Text Block]	Vendor allowances
	At certain times the Company receives allowances or credits from its merchandise vendors primarily related to goods that do not meet our quality standards. These allowances or credits are reflected as a reduction of merchandise inventory in the period they are received. The majority of merchandise is produced exclusively for the Company. Accordingly, the Company does not enter into any arrangements with vendors where payments or other consideration might be received in connection with the purchase or promotion of a vendor’s products such as buy-down agreements or cooperative advertising programs.
Cost of Sales, Policy [Policy Text Block]	Merchandise, buying and occupancy costs
	Merchandise, buying and occupancy costs include the cost of merchandise, markdowns, shrink, freight, shipping and handling charges, buyer and distribution center salaries, buyer travel, rent and other occupancy related costs, various merchandise design and development costs, miscellaneous merchandise-related expenses and other costs related to the Company's distribution network. Merchandise, buying and occupancy costs do not include any depreciation or amortization expense.
Selling, General and Administrative Expenses, Policy [Policy Text Block]	Selling, general and administrative expenses
	Selling, general and administrative expenses include salaries, with the exception of buyer and distribution center salaries, other employee benefits, marketing, store supplies, payment processing fees, information technology-related costs, insurance, professional services, non-buyer travel and miscellaneous other selling and administrative related expenses. Selling, general and administrative expenses do not include any depreciation or amortization expense.
Store Pre-Opening Costs [Policy Text Block]	Store pre-opening costs
	Non-capital expenditures such as payroll and training costs incurred prior to the opening of a new store are charged to selling, general and administrative expense in the period they are incurred.
Lease, Policy [Policy Text Block]	Rent expense, deferred rent obligations and deferred lease incentives
	The Company leases all of its store locations under operating leases. Most of these lease agreements contain tenant improvement allowances, funded by landlord cash incentives or rent abatements, which are recorded as a deferred lease incentive liability and amortized as a reduction of rent expense over the term of the lease. For purposes of recognizing landlord incentives and minimum rental expense, the Company utilizes the date that it obtains the legal right to use and control the leased space, which is generally when the Company enters the space and begins to make improvements in preparation for opening a new store location.
	Certain lease agreements contain rent escalation clauses which provide for scheduled rent increases during the lease term or for rental payments commencing at a date other than the date of initial occupancy. Such escalating rent expense is recorded on a straight-line basis over the lease term, not including any renewal option periods, and the difference between the recognized rent expense and amounts payable under the lease are recorded as deferred rent obligations.
	The Company's leases may also provide for contingent rents, which are determined as a percentage of sales in excess of specified levels. When specified levels have been achieved or when management determines that achieving the specified levels during the fiscal year is probable, the Company records a current accrued liability along with the corresponding rent expense.
Advertising Costs, Policy [Policy Text Block]	Advertising
	Advertising costs are expensed as incurred and included in selling, general and administrative expenses. Advertising costs for fiscal 2014, fiscal 2013 and fiscal 2012, were approximately $7.9 million, $7.4 million and $4.8 million, respectively.
Customer Loyalty Program [Policy Text Block]	Customer loyalty program
	The Company’s Friendship Rewards loyalty program grants customers the ability to accumulate points based on purchase activity. Once a Friendship Rewards member achieves a certain point level, the member earns awards certificates that may be redeemed towards merchandise purchases. Points are accrued as unearned revenue and recorded as a reduction of net sales and a current liability as they are accumulated by members and certificates are earned. The liability is recorded net of estimated breakage based on historical redemption patterns and trends. Revenue and the related cost of sales are recognized upon redemption of the reward certificates, which expire approximately six weeks after issuance.
Private Label Credit Card Program [Policy Text Block]	Private label credit card program
	During fiscal 2012, the Company launched a private label credit card program with a sponsoring bank which provides for the issuance of credit cards bearing the Christopher & Banks and C.J. Banks brands. The sponsoring bank manages and extends credit to the Company's customers and is the sole owner of the accounts receivable generated under the program. As part of the program, the Company received a signing bonus of approximately $0.5 million from the sponsoring bank and also earns revenue based on card usage by its customers. The deferred signing bonus is included in other liabilities and is recognized in net sales ratably over the term of the contract. The other revenue based on customer usage of the card is recognized in net sales in the periods in which the related customer transaction occurs. During fiscal 2014, fiscal 2013 and fiscal 2012, the Company recognized approximately $0.7 million,  $0.6 million and $0.9 million, respectively, in net royalty revenue included in net sales. In addition, the sponsoring bank reimburses the Company for certain marketing expenditures related to the program, subject to an annual cap on the amount of reimbursable expenses.
Lease Termination Costs [Policy Text Block]	Lease termination costs
	Discounted liabilities for future lease costs and the fair value of related subleases of closed locations are recorded when the stores are closed prior to the expiration of the lease or execution of a lease termination agreement. In assessing the discounted liabilities for future costs of obligations related to closed stores, the Company makes assumptions regarding amounts of future subleases. If these assumptions or their related estimates change in the future, the Company may be required to record additional exit costs or reduce exit costs previously accrued. Actual settlements may vary substantially from recorded obligations.  As of January 31, 2015 and February 1, 2014, there was no lease termination liability recorded.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair value measurements
	Fair value of financial instruments and selected non-financial assets and liabilities is measured in accordance with ASC 820-10, Fair Value Measurements. Fair value is defined as the exit price, or the amount that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants as of the measurement date. ASC 820-10 also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability, developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect management's assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances.
	The hierarchy is divided into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
	Certain of the Company's financial assets and liabilities are recorded at their carrying amounts which approximate fair value, based on their short-term nature. These financial assets and liabilities include cash and cash equivalents, accounts receivable and accounts payable. The Company measures its investments and certain of its long-lived assets at fair value.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-based compensation
	Stock-based compensation is accounted for in accordance with ASC 718-10 Stock Compensation. To calculate the estimated fair value of stock options on the date of grant, the Company uses the Black-Scholes option pricing model. The Black-Scholes option pricing model requires the Company to estimate key assumptions such as expected term, volatility, risk-free interest rates and dividend yield to determine the fair value of stock options, based on both historical information and management judgment regarding market factors and trends. The Company recognizes stock-based compensation expense on a straight-line basis over the corresponding vesting period of the entire award, net of estimated forfeiture rates. The Company estimates expected forfeitures of share-based awards at the grant date and recognizes compensation cost only for those awards expected to vest.
	In estimating expected forfeitures, the Company analyzes historical forfeiture and termination information and considers how future termination rates are expected to differ from historical termination rates. The Company ultimately adjusts this forfeiture assumption to actual forfeitures. Any changes in the forfeiture assumptions do not impact the total amount of expense ultimately recognized over the vesting period. Instead, different forfeiture assumptions only impact the timing of expense recognition over the vesting period. If the actual forfeitures differ from management estimates, additional adjustments to compensation expense are recorded.
	Restricted stock awards are generally subject to forfeiture if employment or service terminates prior to the lapse of the restrictions. In addition, certain restricted stock awards have performance-based vesting provisions and are subject to forfeiture, in whole or in part, if these performance conditions are not achieved. Management assesses, on an ongoing basis, the probability of whether the performance criteria will be achieved and, once it is deemed probable, compensation expense is recognized over the relevant performance period. For those awards not subject to performance criteria, the cost of the restricted stock awards is expensed, which is determined to be the fair market value of the shares at the date of grant, on a straight-line basis over the vesting period. Time-based grants of restricted stock participate in dividend payments to the extent dividends are declared and paid prior to vesting.
Income Tax, Policy [Policy Text Block]	Income taxes
	Income taxes are calculated in accordance with ASC 740, Income Taxes, which requires the use of the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future income taxes attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets depends on the generation of future taxable income during the period in which related temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in this assessment.  Deferred tax assets and liabilities are measured using the tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date of such change.
Earnings Per Share, Policy [Policy Text Block]	Net income (loss) per common share
	The Company utilizes the two-class method of calculating earnings per share (“EPS”) where unvested share-based payment awards that contain non-forfeitable rights to receive dividends or dividend equivalents (whether paid or unpaid) are participating securities, and thus, are included in the two-class method of computing EPS. Participating securities include unvested employee restricted stock awards with time-based vesting, which receive non-forfeitable dividend payments.
	Basic EPS is computed based on the weighted average number of shares of common stock outstanding during the applicable period, while diluted EPS is computed based on the weighted average number of shares of common and common equivalent shares outstanding.
Segment Reporting, Policy [Policy Text Block]	Segment reporting
	The Company operates in the retail apparel industry in which it designs, sources and sells women’s apparel and accessories catering to customers generally ranging in age from 45 to 60 who are typically a portion of the female baby boomer demographic.  In fiscal 2013, the Company had identified two operating segments (Christopher & Banks stores and C. J. Banks stores) which it aggregated into one reportable segment as defined by ASC 280, Disclosures about Segments of an Enterprise and Related Information.  Given the Company’s migration to stores offering all sizes, in fiscal 2014 the Company has identified one operating segment (Retail Operations) and one corresponding reportable segment.  The Retail Operations reportable segment includes activity generated by the Company’s retail store locations (Christopher & Banks, C.J. Banks, Missy Petite Women ("MPW") and Outlet stores) as well as its eCommerce business. The “Corporate/Administrative” column in the segment disclosure in Note 18 – Segment Reporting, which primarily represents operating activity at the corporate office and distribution center facility, is presented to allow for reconciliation of segment-level net sales, operating income (loss) and total assets to consolidated net sales, operating income (loss) and total assets. Segment operating income (loss) includes only net sales, merchandise gross margin and direct store expenses with no allocation of corporate overhead. For details regarding the operating performance of the Company's reportable segment, see Note 18 - Segment Reporting.
New Accounting Pronouncements [policy textblock]	Recently issued accounting pronouncements
	In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40).  The amendments in this ASU provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures.  An entity’s management should evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or are available to be issued, when applicable).  ASU 2014-15 is effective for the Company beginning with the annual reporting for fiscal 2016, and reports for interim and annual periods thereafter.  Early adoption is permitted.  The Company is evaluating the impact of adoption of this ASU, but does not expect the adoption to have a material impact on its consolidated financial statements.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification (“ASC”) 605, Revenue Recognition”, as well as various other sections of the ASC, such as, but not limited to, ASC 340-20 Other Assets and Deferred Costs-Capitalized Advertising Costs.  The core principle of ASU 2014-09 is that an entity should recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  ASU 2014-09 is effective for the Company beginning with the annual reporting for fiscal 2017, including interim periods within that year, and is to be applied either retrospectively to each prior reporting period presented or with the cumulative effect recognized at the date of initial adoption as an adjustment to the opening balance of retained earnings (or other appropriate components of equity or net assets on the balance sheet).  Early adoption is not permitted.  The Company is in the process of evaluating the impact of ASU 2014-09, including the choice of application method upon adoption, on its consolidated financial statements.

Restructuring_Tables

Restructuring (Tables)	12 Months Ended
	Jan. 31, 2015
Restructuring and Related Activities [Abstract]
Schedule of restructuring activity
				Lease
		Severance		Termination		Asset
		Accrual		Obligations		Impairment		Other		Total
	28-Jan-12	$	858	$	11,812	$	—	$	—	$	12,670
	Asset impairment charge		—		—		424		—		424
	Non-cash adjustments		—		-6,516		—		—		-6,516
	Restructuring charge		—		304		—		627		931
	Total charges (credits)		—		-6,212		424		627		-5,161
	Non-cash charges		—		—		-424		—		-424
	Deferred lease obligations on closed stores		—		244		—		—		244
	Cash payments		-858		-5,844		—		-627		-7,329
	2-Feb-13	$	—	$	—	$	—	$	—	$	—

Investments_Tables

Investments (Tables)	12 Months Ended
	Jan. 31, 2015
Investments [Abstract]
Schedule of Available-for-sale Securities Reconciliation (in thousands)	Investments as of January 31, 2015 consisted of the following (in thousands):
		Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	Short-term investments:
	Available-for-sale securities:
	Certificates of deposit	$	4,080	$	—	$	-2	$	4,078
	Commercial paper		7,384		3		-3		7,384
	Corporate bonds		1,615		1		—		1,616
	Municipal bonds		214		1		—		215
	Total short-term investments		13,293		5		-5		13,293
	Long-term investments:
	Available-for-sale securities:
	Corporate bonds		2,857		—		-4		2,853
	U.S. Agency securities		1,900		—		-1		1,899
	Total long-term investments		4,757		—		-5		4,752
	Total investments	$	18,050	$	5	$	-10	$	18,045
	Investments as of February 1, 2014, consisted of the following (in thousands):
		Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
	Short-term investments:
	Available-for-sale securities:
	Certificates of deposit	$	5,391	$	—	$	-4	$	5,387
	Commercial paper		5,570		1		—		5,571
	Corporate bonds		815		2		—		817
	U.S. Agency securities		1,207		—		—		1,207
	Total short-term investments		12,983		3		-4		12,982
	Long-term investments:
	Available-for-sale securities:
	Municipal bonds		222		2		—		224
	Corporate bonds		1,652		2		—		1,654
	U.S. Agency securities		1,265		—		—		1,265
	Total long-term investments		3,139		4		—		3,143
	Total investments	$	16,122	$	7	$	-4	$	16,125
Schedule of Available-for-sale Securities Maturities (in thousands)
		January 31, 2015
	Due in one year or less	$	13,293
	Due after one year through five years		4,752
	Total investments	$	18,045

Accounts_Receivable_Tables

Accounts Receivable (Tables)	12 Months Ended
	Jan. 31, 2015
Accounts Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
		January 31, 2015		February 1, 2014
	Credit card receivables	$	1,868	$	1,749
	Amounts due from landlords		1,505		272
	Other receivables		627		407
	Total accounts receivable	$	4,000	$	2,428

Merchandise_Inventories_Tables

Merchandise Inventories (Tables)	12 Months Ended
	Jan. 31, 2015
Inventory Disclosure [Abstract]
Schedule of merchandise inventories
		January 31, 2015		February 1, 2014
	Merchandise - in store/eCommerce	$	33,534	$	35,324
	Merchandise - in transit		11,784		9,553
	Total merchandise inventories	$	45,318	$	44,877

Property_Equipment_and_Improve1

Property, Equipment and Improvements, Net (Tables)	12 Months Ended
	Jan. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment
	Description	Estimated Useful Life	January 31, 2015		February 1, 2014
	Land	—	$	1,597	$	1,597
	Corporate office, distribution center and related building improvements	25 years		12,616		12,426
	Store leasehold improvements	Shorter of the useful life or term of related lease, typically 10 years		51,700		52,591
	Store furniture and fixtures	3 to 10 years		70,083		76,264
	Corporate office and distribution center furniture, fixtures and equipment	7 years		4,344		5,069
	Computer and point of sale hardware and software	3 to 5 years		32,888		34,808
	Construction in progress	—		2,721		1,892
	Total property, equipment and improvements, gross			175,949		184,647
	Less accumulated depreciation and amortization			-130,842		-148,189
	Total property, equipment and improvements, net		$	45,107	$	36,458

Accrued_Liabilities_Tables

Accrued Liabilities (Tables)	12 Months Ended
	Jan. 31, 2015
Accrued Liabilities
Schedule of other accrued liabilities
		January 31, 2015		February 1, 2014
	Gift card and store credit liabilities	$	8,170	$	8,078
	Accrued Friendship Rewards Program loyalty liability		3,731		4,020
	Accrued income, sales and other taxes payable		1,578		1,517
	Accrued occupancy-related expenses		3,957		2,101
	Sales return reserve		1,077		835
	Other accrued liabilities		5,475		7,197
	Total accrued liabilities and other current liabilities	$	23,988	$	23,748

Stockholders_Equity_and_StockB1

Stockholders Equity and Stock-Based Compensation (Tables)	12 Months Ended
	Jan. 31, 2015
Equity [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
		Fiscal 2014	Fiscal 2013		Fiscal 2012
	Expected dividend yield	—%	—%		—%
	Expected volatility	59.59%	70.08-75.66%		73.19%
	Risk-free interest rate	1.73%	0.76-1.37%		0.27-1.05%
	Expected term	5.00 years	5.00 years		4.40 years
Summary of stock option activity
						Aggregate		Weighted Average
			Weighted Average			Intrinsic Value (in		Remaining
		Number of Shares	Exercise Price			thousands)		Contractual Life
	Outstanding, beginning of period	3,549,901		4.68
	Granted	5,500		8.80
	Exercised	-822,718		3.30
	Canceled - Vested	-52,900		14.86
	Canceled - Unvested (Forfeited)	-37,009		2.92
	Outstanding, end of period	2,642,774	$	4.94		$	4,015	6.91 years
	Exercisable, end of period	1,952,854	$	5.49		$	2,691	6.62 years
			Weighted Average
			Grant Date
		Number of Shares	Fair Value
	Nonvested, beginning of period	2,003,321	$	1.83
	Granted	5,500		4.55
	Vested	-1,281,892		1.71
	Forfeited	-37,009		1.68
	Nonvested, end of period	689,920		2.08
Summary of restricted stock activity
			Weighted Average			Aggregate
			Grant Date Fair			Intrinsic Value
		Number of Shares	Value			(in thousands)
	Nonvested, beginning of period	159,826	$	6.30
	Granted	57,958		8.89
	Vested	-119,578		6.44
	Forfeited	-6,565		5.23
	Nonvested, end of period	91,641		7.84		$	477

Other_Income_Expense_Tables

Other Income (Expense) (Tables)	12 Months Ended
	Jan. 31, 2015
Other Income and Expenses [Abstract]
Interest and Other Income [Table Text Block]
		Fiscal 2014		Fiscal 2013		Fiscal 2012
	Interest expense	$	-258	$	-253	$	-133
	Interest income, net		68		62		43
	Gain (loss) on investments carried at fair value		-1		—		76
	Total other income (expense)	$	-191	$	-191	$	-14

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Jan. 31, 2015
Income Tax Disclosure
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
		Fiscal 2014			Fiscal 2013			Fiscal 2012
	Current:
	Federal tax expense (benefit)	$	-248		$	107		$	-127
	State tax expense (benefit)		283			-112			184
	Current tax expense (benefit)		35			-5			57
	Deferred tax expense (benefit)		-37,937			—			40
	Income tax provision (benefit)	$	-37,902		$	-5		$	97
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
		January 31, 2015		February 1, 2014		February 2, 2013
	Federal income tax (benefit) at statutory rate	35.0	%	35.0	%	-35	%
	State income tax, net of federal benefit	4.6		0.4		0.5
	Change in valuation allowance	-447.6		-33.7		34.8
	Reserve for unrecognized tax benefits	0.6		-2.4		-0.5
	Officer compensation expense	—		—		0.3
	Other	-3.4		0.6		0.5
	Effective income tax rate	-410.8	%	-0.1	%	0.6	%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
		January 31, 2015			February 1, 2014
	Deferred tax assets:
	Accrued Friendship Rewards loyalty liability	$	1,180		$	1,301
	Accrued incentives		—			1,434
	Merchandise inventories		1,291			1,351
	Deferred rent and deferred lease incentives		6,426			3,418
	Stock-based compensation expense		2,152			2,303
	Net operating loss carryforwards		24,875			26,857
	Contribution carryforwards		159			202
	Tax credit carryforwards		706			984
	Depreciation and amortization		46			2,651
	Other accrued liabilities		1,555			2,169
	Total deferred tax assets		38,390			42,670
	Less: Valuation allowance		-28			-42,223
	Deferred tax assets, net of valuation allowance		38,362			447
	Deferred tax liabilities:
	Other		-424			-447
	Total deferred tax liabilities		-424			-447
	Net deferred tax assets	$	37,938		$	—
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
	Balance at January 28, 2012	$	856
	Additions based on tax positions related to the current year		283
	Reductions for tax positions of previous years		-39
	Reductions for tax positions of previous years due to lapse of applicable statute of limitations		-107
	Balance at February 2, 2013		993
	Additions based on tax positions related to the current year		152
	Reductions for tax positions of previous years		-152
	Reductions for tax positions of previous years due to lapse of applicable statute of limitations		-236
	Balance at February 1, 2014		757
	Additions based on tax positions related to the current year		180
	Additions for tax positions of previous years		24
	Reductions for tax positions of previous years due to lapse of applicable statute of limitations		-85
	Balance at January 31, 2015	$	876

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Jan. 31, 2015
Earnings Per Share [Abstract]
Schedule of earnings per share
		Fiscal 2014		Fiscal 2013		Fiscal 2012
	Numerator (in thousands):
	Net income (loss) attributable to Christopher & Banks Corporation	$	47,126	$	8,690	$	-16,076
	Income allocated to participating securities		-155		-32		—
	Net income (loss) available to common stockholders	$	46,971	$	8,658	$	-16,076
	Denominator (in thousands):
	Weighted average common shares outstanding - basic		36,819		36,246		35,694
	Dilutive shares		934		898		—
	Weighted average common and common equivalent shares outstanding - diluted		37,753		37,144		35,694
	Net earnings per common share:
	Basic	$	1.28	$	0.24	$	-0.45
	Diluted	$	1.24	$	0.23	$	-0.45

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Jan. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of available for sale securities measured on a recurring basis (in thousands)
					Fair Value Measurements
	As of January 31, 2015:				Using Inputs Considered as
		Fair Value			Level 1		Level 2		Level 3
	Short-term investments:
	Certificates of deposit	$	4,078		$	—	$	4,078	$	—
	Commercial paper		7,384			—		7,384		—
	Corporate bonds		1,616			—		1,616		—
	Municipal bonds		215			—		215		—
	Total current assets		13,293			—		13,293		—
	Long-term investments:
	Corporate bonds		2,853			—		2,853		—
	U.S. Agency securities		1,899			—		1,899		—
	Total non-current assets		4,752			—		4,752		—
	Total assets	$	18,045		$	—	$	18,045	$	—
					Fair Value Measurements
	As of February 1, 2014:				Using Inputs Considered as
		Fair Value			Level 1		Level 2		Level 3
	Short-term investments:
	Certificates of deposit	$	5,387		$	—	$	5,387	$	—
	Commercial paper		5,571			—		5,571		—
	Corporate bonds		817			—		817		—
	U.S. Agency securities		1,207			—		1,207		—
	Total current assets		12,982			—		12,982		—
	Long-term investments:
	Municipal bonds		224			—		224		—
	Corporate bonds		1,654			—		1,654		—
	U.S. Agency securities		1,265			—		1,265		—
	Total non-current assets		3,143			—		3,143		—
	Total assets	$	16,125		$	—	$	16,125	$	—
Schedule of assets measured at fair value on a non-recurring basis (in thousands)
					Fair Value Measurements
					Using Inputs Considered as
	Description	Fair Value			Level 1		Level 2		Level 3		Realized Losses
	Assets as of January 31, 2015
	Long-lived assets held and used	$	54		$	—	$	—	$	54	$	-216
	Assets as of February 1, 2014
	Long-lived assets held and used	$	5		$	—	$	—	$	5	$	-140
Schedule of unobservable inputs
		Range
	Unobservable Inputs	Fiscal 2014		Fiscal 2013
	Weighted Average Cost of Capital (WACC)	15%		15.80%
	Annual sales growth	(3%) to 3.5%		3% to 9.8%

Lease_Commitments_Tables

Lease Commitments (Tables)	12 Months Ended
	Jan. 31, 2015
Lease Commitments [Abstract]
Schedule of Rent Expense [Table Text Block]
		Fiscal 2014		Fiscal 2013		Fiscal 2012
	Minimum rent	$	38,720	$	32,547	$	33,378
	Contingent rent		3,914		7,602		6,980
	Maintenance, taxes and other		17,577		17,766		20,651
	Amortization of deferred lease incentives		-2,229		-2,383		-3,237
	Total rent expense	$	57,982	$	55,532	$	57,772
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
		Operating Leases
		Retail Store		Vehicles/
		Facilities		Other		Total
	Less than 12 months	$	34,866	$	272	$	35,138
	12 - 24 months		29,254		115		29,369
	25 - 36 months		22,629		18		22,647
	37 - 48 months		19,533		—		19,533
	49 - 60 months		16,357		—		16,357
	Greater than 60 months		48,977		—		48,977
	Total minimum lease payments	$	171,616	$	405	$	172,021

Segment_Reporting_Tables

Segment Reporting (Tables)	12 Months Ended
	Jan. 31, 2015
Segment Reporting [Abstract]
Schedule of segment reporting
		Retail		Corporate/
	(in thousands)	Operations		Administrative		Consolidated
	Fiscal 2014
	Net sales	$	418,584	$	—	$	418,584
	Depreciation and amortization		9,166		2,620		11,786
	Operating income (loss)		60,830		-51,415		9,415
	Total assets		95,538		100,499		196,037
	Fiscal 2013
	Net sales	$	435,754	$	—	$	435,754
	Depreciation and amortization		9,757		3,411		13,168
	Operating income (loss)		63,633		-54,757		8,876
	Total assets		95,631		53,347		148,978
	Fiscal 2012
	Net sales	$	430,302	$	—	$	430,302
	Depreciation and amortization		14,122		4,473		18,595
	Operating income (loss)		31,363		-47,328		-15,965
	Total assets		96,454		39,478		135,932

Quarterly_Financial_Data_Table

Quarterly Financial Data (Tables)	12 Months Ended
	Jan. 31, 2015
Quarterly Financial Data [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]			Fiscal 2014 Quarters (1)
	(in thousands, except per share data)		First		Second		Third		Fourth (2)
	Net sales		$	103,366	$	106,633	$	110,610	$	97,975
	Operating income (loss)			2,792		3,250		9,344		-5,971
	Net income			2,616		3,362		8,983		32,164
	Net income per share data:
	Basic		$	0.07	$	0.09	$	0.24	$	0.87
	Diluted		$	0.07	$	0.09	$	0.24	$	0.86
			Fiscal 2013 Quarters (1)
	(in thousands, except per share data)		First		Second		Third		Fourth
	Net sales		$	108,519	$	104,233	$	118,077	$	104,925
	Operating income (loss)			782		-1		8,613		-518
	Net income (loss)			629		-265		8,612		-286
	Net income (loss) per share data:
	Basic		$	0.02	$	-0.01	$	0.24	$	-0.01
	Diluted		$	0.02	$	-0.01	$	0.23	$	-0.01
		-1		The summation of quarterly per share data may not equate to the calculation for the full fiscal year as quarterly calculations are performed on a discrete basis.
		-2		As described in Note 1, in connection with the preparation of the Company’s consolidated financial statements for the fiscal year ended January 31, 2015, the Company determined that its calculation of deferred rent expense was incorrect.  The Company corrected the error in the fourth quarter of fiscal 2014, which resulted in an increase to rent expense of approximately $3.6 million.  The effect of the correction was to decrease operating income for the 2014 fourth quarter by approximately $3.6 million; net income for the fourth quarter was reduced by approximately $2.2 million.  The Company has concluded that this correction is immaterial to the related consolidated financial statements as a whole.

Nature_of_Business_and_Signifi2

Nature of Business and Significant Accounting Policies (Details) (USD $)	3 Months Ended	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
	item	item	segment	item
		segment	item
Nature of Business and Significant Accounting Policies [Abstract]
Number of Stores	518	518	560	608
Fiscal Period Duration		364 days	364 days	371 days
Cumulative increase to rent expense due to error correction	$3,600,000
Decrease to operating income due to error correction	3,600,000	3,600,000
Decrease to net income, net of tax, due to error correction	2,200,000	2,200,000
Impact to cash flows from operations due to error correction	0
Period of balance outstanding before gift card breakage is recognized		36 months
Advertising Expense		7,900,000	7,400,000	4,800,000
Expiration period of reward certificates from the date of issuance (in weeks)		42 days
Signing bonus received				500,000
Royalty Revenue		700,000	600,000	900,000
Lease termination liability	$0	$0	$0
Number of Operating Segments		1	2
Number of Reportable Segments		1	1
Computer and point of sale hardware and software | Maximum
Property, equipment and improvements
Estimated Useful Life		P5Y
Computer and point of sale hardware and software | Minimum
Property, equipment and improvements
Estimated Useful Life		P3Y
Store furniture and fixtures | Maximum
Property, equipment and improvements
Estimated Useful Life		P10Y
Store furniture and fixtures | Minimum
Property, equipment and improvements
Estimated Useful Life		P3Y
Corporate office and distribution center furniture fixtures and equipment
Property, equipment and improvements
Estimated Useful Life		P7Y
Corporate office, distribution center and related building improvements
Property, equipment and improvements
Estimated Useful Life		P25Y
Store leasehold improvements
Property, equipment and improvements
Estimated Useful Life		P10Y
Store leasehold improvements | Maximum
Property, equipment and improvements
Estimated Useful Life		P10Y

Restructuring_Details

Restructuring (Details) (USD $)	3 Months Ended		11 Months Ended	12 Months Ended
	Feb. 02, 2013	Apr. 28, 2012	Jan. 28, 2012	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
	item	item	item			item
Restructuring and Related Activities [Abstract]
Number of stores for which net lease termination liabilities exceeded the actual settlements negotiated						55
Lease Termination Fees, Net		$300,000
Asset Impairment Charges				216,000	140,000	424,000
Number of stores closed	4	3
Number of impaired stores the Company planned to continue to operate		14
Restructuring Related Professional Fees						600,000
Restructuring Charges			$21,200,000			$931,000
Number of stores identified for closure			103
Number of stores approved to be closed			100

Restructuring_Rollforward_Deta

Restructuring - Rollforward (Details) (USD $)	11 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jan. 28, 2012	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Changes in restructuring and impairment charges
Restructuring Reserve, Beginning Balance				$12,670
Asset Impairment Charges		216	140	424
Non-cash adjustements				-6,516
Restructuring charges	21,200			931
Restructuring Costs and Asset Impairment Charges, Total		216	140	-5,161
Non-cash charges				-424
Deferred lease obligations on closed stores				244
Cash payments				-7,329
Restructuring Reserve, Ending Balance	12,670
Employee Severance [Member]
Changes in restructuring and impairment charges
Restructuring Reserve, Beginning Balance				858
Cash payments				-858
Lease Termination Obligations
Changes in restructuring and impairment charges
Restructuring Reserve, Beginning Balance				11,812
Non-cash adjustements				-6,516
Restructuring charges				304
Restructuring Costs and Asset Impairment Charges, Total				-6,212
Deferred lease obligations on closed stores				244
Cash payments				-5,844
Asset Impairment [Member]
Changes in restructuring and impairment charges
Asset Impairment Charges				424
Restructuring Costs and Asset Impairment Charges, Total				424
Non-cash charges				-424
Other Restructuring [Member]
Changes in restructuring and impairment charges
Restructuring charges				627
Restructuring Costs and Asset Impairment Charges, Total				627
Cash payments				($627)

Investments_Details

Investments (Details) (USD $)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Available-for-sale securities
Amortized Cost	$18,050,000	$16,122,000
Unrealized Gains	5,000	7,000
Unrealized Losses	-10,000	-4,000
Estimated Fair Value	18,045,000	16,125,000
Purchases of available-for-sale securities	18,480,000	24,484,000
Maturities and sales of available-for-sale securities	16,506,000	8,306,000	21,403,000
Other than temporary impairment of available-for-sale securities	0	0
Expected maturities of available-for-sale securities
Due in one year or less	13,293,000
Due after one year through five years	4,752,000
Short Term Investments
Available-for-sale securities
Amortized Cost	13,293,000	12,983,000
Unrealized Gains	5,000	3,000
Unrealized Losses	-5,000	-4,000
Estimated Fair Value	13,293,000	12,982,000
Long Term Investments
Available-for-sale securities
Amortized Cost	4,757,000	3,139,000
Unrealized Gains		4,000
Unrealized Losses	-5,000
Estimated Fair Value	4,752,000	3,143,000
Certificates of deposit | Short Term Investments
Available-for-sale securities
Amortized Cost	4,080,000	5,391,000
Unrealized Losses	-2,000	-4,000
Estimated Fair Value	4,078,000	5,387,000
Commercial paper | Short Term Investments
Available-for-sale securities
Amortized Cost	7,384,000	5,570,000
Unrealized Gains	3,000	1,000
Unrealized Losses	-3,000
Estimated Fair Value	7,384,000	5,571,000
Corporate bonds | Short Term Investments
Available-for-sale securities
Amortized Cost	1,615,000	815,000
Unrealized Gains	1,000	2,000
Estimated Fair Value	1,616,000	817,000
Corporate bonds | Long Term Investments
Available-for-sale securities
Amortized Cost	2,857,000	1,652,000
Unrealized Gains		2,000
Unrealized Losses	-4,000
Estimated Fair Value	2,853,000	1,654,000
U.S. Agency securities | Short Term Investments
Available-for-sale securities
Amortized Cost		1,207,000
Estimated Fair Value		1,207,000
U.S. Agency securities | Long Term Investments
Available-for-sale securities
Amortized Cost	1,900,000	1,265,000
Unrealized Losses	-1,000
Estimated Fair Value	1,899,000	1,265,000
Municipal bonds | Short Term Investments
Available-for-sale securities
Amortized Cost	214,000
Unrealized Gains	1,000
Estimated Fair Value	215,000
Municipal bonds | Long Term Investments
Available-for-sale securities
Amortized Cost		222,000
Unrealized Gains		2,000
Estimated Fair Value		$224,000

Accounts_Receivable_Details

Accounts Receivable (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014
Accounts Receivable, Net [Abstract]
Credit card receivables	$1,868	$1,749
Amounts due from landlords	1,505	272
Other receivables	627	407
Receivables, Net, Current, Total	$4,000	$2,428
Collection Period, Minimum	1 day
Collection Period, Maximum	5 days

Merchandise_Inventories_Detail

Merchandise Inventories (Details) (USD $)	Jan. 31, 2015	Feb. 01, 2014
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Merchandise - in store/e-commerce	$33,534	$35,324
Merchandise - in transit	11,784	9,553
Total merchandise inventories	$45,318	$44,877

Property_Equipment_and_Improve2

Property, Equipment and Improvements, Net (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Property, equipment and improvements
Total property, equipment and improvements, gross	$175,949	$184,647
Less accumulated depreciation and amortization	-130,842	-148,189
Property, equipment and improvements, net	45,107	36,458
Asset Impairment Charges	216	140	424
Land
Property, equipment and improvements
Total property, equipment and improvements, gross	1,597	1,597
Corporate office, distribution center and related building improvements
Property, equipment and improvements
Total property, equipment and improvements, gross	12,616	12,426
Estimated Useful Life	P25Y
Store leasehold improvements
Property, equipment and improvements
Total property, equipment and improvements, gross	51,700	52,591
Estimated Useful Life	P10Y
Store leasehold improvements | Maximum
Property, equipment and improvements
Estimated Useful Life	P10Y
Store furniture and fixtures
Property, equipment and improvements
Total property, equipment and improvements, gross	70,083	76,264
Store furniture and fixtures | Minimum
Property, equipment and improvements
Estimated Useful Life	P3Y
Store furniture and fixtures | Maximum
Property, equipment and improvements
Estimated Useful Life	P10Y
Corporate office and distribution center furniture fixtures and equipment
Property, equipment and improvements
Total property, equipment and improvements, gross	4,344	5,069
Estimated Useful Life	P7Y
Computer and point of sale hardware and software
Property, equipment and improvements
Total property, equipment and improvements, gross	32,888	34,808
Computer and point of sale hardware and software | Minimum
Property, equipment and improvements
Estimated Useful Life	P3Y
Computer and point of sale hardware and software | Maximum
Property, equipment and improvements
Estimated Useful Life	P5Y
Construction in progress
Property, equipment and improvements
Total property, equipment and improvements, gross	$2,721	$1,892

Accrued_Liabilities_Details

Accrued Liabilities (Details) (USD $)	Jan. 31, 2015	Feb. 01, 2014
In Thousands, unless otherwise specified
Accrued Liabilities
Gift card and store credit liabilities	$8,170	$8,078
Accrued Friendship Rewards Program loyalty liability	3,731	4,020
Accrued income, sales and other taxes payable	1,578	1,517
Accrued occupancy-related expenses	3,957	2,101
Sales return reserve	1,077	835
Other accrued liabilities	5,475	7,197
Total accrued liabilities and other current liabilities	$23,988	$23,748

Credit_Facility_Details

Credit Facility (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2015	Nov. 01, 2014	Feb. 01, 2014	Feb. 02, 2013
Credit Facility
Maximum availability under credit facility	$50
Maximum availability for letters of credit	10
Deferred financing costs		0.1
Ownership interest percentage held as collateral security	100.00%
Borrowings under the credit facility	0		0	0
Borrowing base	29.3
Open on-demand letters of credit	0.9
Net available borrowing capacity under the credit facility	25.4
Minimum
Credit Facility
Letters of credit fees (as a percent)	1.00%
Minimum availability requirement as a percentage of borrowing base	10.00%
Minimum availability requirement per covenant	$3
Maximum
Credit Facility
Letters of credit fees (as a percent)	1.75%
London Interbank Offered Rate (LIBOR) | Minimum
Credit Facility
Basis spread on variable rate (as a percent)	1.50%
London Interbank Offered Rate (LIBOR) | Maximum
Credit Facility
Basis spread on variable rate (as a percent)	1.75%
Prime Rate | Minimum
Credit Facility
Basis spread on variable rate (as a percent)	0.50%
Prime Rate | Maximum
Credit Facility
Basis spread on variable rate (as a percent)	0.75%

Stockholders_Equity_and_StockB2

Stockholders Equity and Stock-Based Compensation (Details) (USD $)	0 Months Ended	12 Months Ended
	Jul. 05, 2012	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Stockholders' Equity and Stock-Based Compensation [Abstract]
Dividends paid		$0	$0	$0
Weighted average valuation assumptions
Expected volatility		59.59%		73.19%
Risk Free Interest Rate		1.73%
Expected term		5 years	5 years	4 years 4 months 24 days
Stock-based compensation
Pre-tax stock-based compensation expense		2,300,000	2,800,000	2,300,000
Stockholder Rights Plan [Abstract]
Number of preferred share purchase rights declared as a dividend for each outstanding share of common stock	1
Common stock, par value (in dollars per share)		$0.01	$0.01
Chief Executive Officer [Member]
Stock options outstanding activity rollforward
Outstanding, end of period		1,500,000
Minimum
Weighted average valuation assumptions
Expected volatility			70.08%
Risk Free Interest Rate			0.76%	0.27%
Stock-based compensation
Price at which common stock may be purchased under option grant, as a percent of the fair value at grant date		100.00%
Maximum
Weighted average valuation assumptions
Expected volatility			75.66%
Risk Free Interest Rate			1.37%	1.05%
Employee Stock Option [Member]
Stock options outstanding activity rollforward
Outstanding, beginning of period		3,549,901
Granted		5,500
Exercised		-822,718		0
Canceled - Vested		-52,900
Canceled - Unvested (Forfeited)		-37,009
Outstanding, end of period		2,642,774	3,549,901
Exercisable, end of period		1,952,854
Weighted average exercise price of stock options outstanding rollforward
Outstanding, Exercise Price, beginning of period		$4.68
Grants, Exercise Price		$8.80
Exercised, Exercise Price		$3.30
Canceled - Vested, Exercise Price		$14.86
Canceled - Unvested (Forfeited), Exercise Price		$2.92
Outstanding, Exercise Price, end of period		$4.94	$4.68
Exercisable, end of period		$5.49
Aggregate intrinsic value of options outstanding		4,015,000
Aggregate intrinsic value of exercisable options		2,691,000
Weighted average remaining contractual life of options outstanding		6 years 10 months 28 days
Weighted average remaining contractual life of exercisable options		6 years 7 months 13 days
Fair value of options vested during the period		$1.71	$2.06	$2.50
Aggregate intrinsic value of options exercised during the period		4,600,000	200,000
Nonvested stock options, shares rollforward
Nonvested, beginning of period		2,003,321
Granted		5,500
Vested		-1,281,892
Forfeited		-37,009
Nonvested, end of period		689,920	2,003,321
Weighted Average Grant Date Fair Value - Nonvested options
Nonvested, beginning of period		$1.83
Granted		$4.55	$3.80	$1.70
Vested		$1.71
Forfeited		$1.68
Nonvested, end of period		$2.08	$1.83
Total compensation expense not yet recognized on nonvested stock awards granted		1,000,000
Weighted average period over which the unrecognized compensation expense related to nonvested stock awards granted is expected to be recognized		10 months 6 days
Employee Stock Option [Member] | Employee [Member]
Stock-based compensation
Vesting period		3 years
Employee Stock Option [Member] | Director [Member]
Stock-based compensation
Vesting period		30 months
Employee Stock Option [Member] | Maximum | Employee [Member]
Stock-based compensation
Length of time options are exercisable after grant date		10 years
Employee Stock Option [Member] | Maximum | Director [Member]
Stock-based compensation
Length of time options are exercisable after grant date		10 years
Restricted Stock [Member]
Weighted Average Grant Date Fair Value - Nonvested options
Total compensation expense not yet recognized on nonvested stock awards granted		300,000
Weighted average period over which the unrecognized compensation expense related to nonvested stock awards granted is expected to be recognized		8 months 12 days
Nonvested restricted stock, shares rollforward
Nonvested number, beginning of period		159,826
Granted number		57,958
Vested number		-119,578
Forfeited number		-6,565
Nonvested number, end of period		91,641	159,826
Aggregate intrinsic value		477,000
Weighted Average Grant Date Fair Value - Nonvested restricted stock
Grant date fair value, nonvested, beginning of period		$6.30
Grant date fair value, nonvested, granted		$8.89	$6.51	$1.68
Grant date fair value, vested		$6.44
Grant date fair value, nonvested, forfeited		$5.23
Grant date fair value, nonvested, end of period		$7.84	$6.30
Total fair value of restricted stock vesting during the period		800,000	600,000	2,500,000
Aggregate intrinsic value of restricted stock vesting during the period		600,000	600,000	3,700,000
Restricted Stock [Member] | Director [Member]
Stock-based compensation
Vesting period		1 year
Restricted Stock [Member] | Minimum | Employee [Member]
Stock-based compensation
Vesting period		1 year
Restricted Stock [Member] | Maximum | Employee [Member]
Stock-based compensation
Vesting period		3 years
2005 Plan [Member]
Stock-based compensation
Number of shares available for grant		0
Number of shares authorized for grant		5,000,000
2013 Plan [Member]
Stock-based compensation
Number of shares available for grant		300,000
Number of shares authorized for grant		500,000
2014 Plan [Member]
Stock-based compensation
Number of shares available for grant		3,900,000
Number of shares authorized for grant		3,900,000
2014 Long Term Incentive Plan Member
Weighted Average Grant Date Fair Value - Nonvested restricted stock
Grant date fair value, nonvested, granted		$6.33
2014 Long Term Incentive Plan Member | Minimum
Other Stock-Based Awards
Number of shares that could be issued at vesting, as a percent		0.00%
2014 Long Term Incentive Plan Member | Maximum
Other Stock-Based Awards
Number of shares that could be issued at vesting, as a percent		200.00%
2014 Long Term Incentive Plan Member | Two-year Target [Member]
Other Stock-Based Awards
Performance share award target, net of forfeitures		114,000
Maximum future value of awards		1,200,000
2014 Long Term Incentive Plan Member | Three-year Target [Member]
Other Stock-Based Awards
Performance share award target, net of forfeitures		171,000
Maximum future value of awards		$1,800,000

Other_Income_Expense_Details

Other Income (Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Other Income and Expenses [Abstract]
Interest expense	($258)	($253)	($133)
Interest income, net	68	62	43
Gain (loss) on investments carried at fair value	-1		76
Total other income (expense)	($191)	($191)	($14)

Income_Taxes_Tax_Provision_Det

Income Taxes - Tax Provision (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Income Tax Disclosure
Federal tax expense (benefit)	($248)	$107	($127)
State tax expense (benefit)	283	-112	184
Current Tax Expense (Benefit)	35	-5	57
Deferred tax expense (benefit)	-37,937		40
Income Tax Provision (Benefit), Total	($37,902)	($5)	$97

Income_Taxes_ETR_Details

Income Taxes - ETR (Details)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Income Tax Disclosure
Federal income tax (benefit) at statutory rate	35.00%	35.00%	-35.00%
State income tax, net of federal benefit	4.60%	0.40%	0.50%
Change in valuation allowance	-447.60%	-33.70%	34.80%
Reserve for unrecognized tax benefits	0.60%	-2.40%	-0.50%
Officer compensation expense			0.30%
Other	-3.40%	0.60%	0.50%
Effective income tax rate	-410.80%	-0.10%	0.60%

Income_Taxes_DTA_DTL_Details

Income Taxes - DTA & DTL (Details) (USD $)	Jan. 31, 2015	Feb. 01, 2014	Jan. 28, 2012
In Thousands, unless otherwise specified
Deferred tax assets:
Accrued Friendship Rewards loyalty liability	$1,180	$1,301
Accrued Incentives		1,434
Merchandise inventories	1,291	1,351
Deferred rent and deferred lease incentives	6,426	3,418
Stock-based compensation expense	2,152	2,303
Net operating loss carryforwards	24,875	26,857
Contribution carryforwards	159	202
Tax credit carryforwards	706	984
Depreciation and amortization	46	2,651
Other accrued liabilities	1,555	2,169
Total deferred tax assets	38,390	42,670
Less: Valuation allowance	-28	-42,223	-10,600
Deferred tax assets, net of valuation allowance	38,362	447
Deferred tax liabilities:
Other	-424	-447
Total deferred tax liabilities	-424	-447
Net deferred tax assets	$37,938

Income_Taxes_UTB_Details

Income Taxes - UTB (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Income Tax Disclosure
Unrecognized Tax Benefits, Beginning Balance	$757	$993	$856
Additions based on tax positions related to the current year	180	152	283
Additions for tax positions of previous years	24
Reductions for tax positions of previous years		-152	-39
Reductions for tax positions of previous years due to lapse of applicable statute of limitations	-85	-236	-107
Unrecognized Tax Benefits, Ending Balance	$876	$757	$993

Income_Taxes_Loss_carryforward

Income Taxes - Loss carryforwards (Details) (USD $)	3 Months Ended	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Income Tax Disclosure
Deferred Federal Income Tax Expense (Benefit)		$24,700,000
Operating Loss Carryforwards	70,500,000	70,500,000
Tax credit carryforward	700,000	700,000
Portion of net operating loss related to equity-based compensation	5,600,000	5,600,000
Deferred State and Local Income Tax Expense (Benefit)		-2,200,000
Unrecognized tax benefits that, if recognized, would impact the effective tax rate	600,000	600,000	500,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		53,000	47,000	42,000
Accrued interest and penalties related to unrecognized tax benefits	200,000	200,000	100,000
Number of consecutive years of profitability	2 years
Number of years of cumulative positive earnings	3 years
Deferred Tax Assets, Valuation Allowance	28,000	28,000	42,223,000		10,600,000
Valuation Allowance, Increase (Decrease)		($41,300,000)

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	3-May-14	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	4-May-13	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Numerator (in thousands):
Net income (loss) attributable to Christopher & Banks Corporation	$32,164	$8,983	$3,362	$2,616	($286)	$8,612	($265)	$629	$47,126	$8,690	($16,076)
Income allocated to participating securities									-155	-32
Net income (loss) available to common shareholders									$46,971	$8,658	($16,076)
Denominator (in thousands):
Weighted average common shares outstanding - basic									36,819,000	36,246,000	35,694,000
Dilutive shares									934,000	898,000
Weighted average common and common equivalent shares outstanding - diluted									37,753,000	37,144,000	35,694,000
Net earnings per common share:
Basic	$0.87	$0.24	$0.09	$0.07	($0.01)	$0.24	($0.01)	$0.02	$1.28	$0.24	($0.45)
Diluted	$0.86	$0.24	$0.09	$0.07	($0.01)	$0.23	($0.01)	$0.02	$1.24	$0.23	($0.45)
Stock options excluded from the shares used in the computation of diluted earnings per share because they were anti-dilutive									300,000	500,000	3,700,000

Fair_Value_Measurementsrecurri

Fair Value Measurements-recurring (Details) (Recurring basis, USD $)	Jan. 31, 2015	Feb. 01, 2014
Fair value measurements
Level 1 to Level 2 Transfers	$0
Level 2 to Level 1 Transfers	0
Level 2
Fair value measurements
Total assets	18,045,000	16,125,000
Short Term Investments | Level 2
Fair value measurements
Short-term investments	13,293,000	12,982,000
Short Term Investments | Level 2 | Certificates of deposit
Fair value measurements
Short-term investments	4,078,000	5,387,000
Short Term Investments | Level 2 | Commercial paper
Fair value measurements
Short-term investments	7,384,000	5,571,000
Short Term Investments | Level 2 | Corporate bonds
Fair value measurements
Short-term investments	1,616,000	817,000
Short Term Investments | Level 2 | Municipal bonds
Fair value measurements
Short-term investments	215,000
Short Term Investments | Level 2 | U.S. Agency securities
Fair value measurements
Short-term investments		1,207,000
Long-term investments | Level 2
Fair value measurements
Long-term investments	4,752,000	3,143,000
Long-term investments | Level 2 | Corporate bonds
Fair value measurements
Long-term investments	2,853,000	1,654,000
Long-term investments | Level 2 | Municipal bonds
Fair value measurements
Long-term investments		224,000
Long-term investments | Level 2 | U.S. Agency securities
Fair value measurements
Long-term investments	1,899,000	1,265,000
Estimate of Fair Value Measurement [Member]
Fair value measurements
Total assets	18,045,000	16,125,000
Estimate of Fair Value Measurement [Member] | Short Term Investments
Fair value measurements
Short-term investments	13,293,000	12,982,000
Estimate of Fair Value Measurement [Member] | Short Term Investments | Certificates of deposit
Fair value measurements
Short-term investments	4,078,000	5,387,000
Estimate of Fair Value Measurement [Member] | Short Term Investments | Commercial paper
Fair value measurements
Short-term investments	7,384,000	5,571,000
Estimate of Fair Value Measurement [Member] | Short Term Investments | Corporate bonds
Fair value measurements
Short-term investments	1,616,000	817,000
Estimate of Fair Value Measurement [Member] | Short Term Investments | Municipal bonds
Fair value measurements
Short-term investments	215,000
Estimate of Fair Value Measurement [Member] | Short Term Investments | U.S. Agency securities
Fair value measurements
Short-term investments		1,207,000
Estimate of Fair Value Measurement [Member] | Long-term investments
Fair value measurements
Long-term investments	4,752,000	3,143,000
Estimate of Fair Value Measurement [Member] | Long-term investments | Corporate bonds
Fair value measurements
Long-term investments	2,853,000	1,654,000
Estimate of Fair Value Measurement [Member] | Long-term investments | Municipal bonds
Fair value measurements
Long-term investments		224,000
Estimate of Fair Value Measurement [Member] | Long-term investments | U.S. Agency securities
Fair value measurements
Long-term investments	$1,899,000	$1,265,000

Fair_Value_Measurementsnonrecu

Fair Value Measurements-non-recurring (Details) (USD $)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Fair value measurements
Realized losses from asset impairment	($216,000)	($140,000)	($424,000)
Nonrecurring basis
Fair value measurements
Realized losses from asset impairment	-216,000	-140,000
Carrying value of long-lived assets held and used	300,000	100,000
Nonrecurring basis | Estimate of Fair Value Measurement [Member]
Fair value measurements
Fair value of long-lived assets held and used	54,000	5,000
Nonrecurring basis | Level 3
Fair value measurements
Fair value of long-lived assets held and used	$54,000	$5,000

Fair_Value_Measurementsvaluati

Fair Value Measurements-valuation (Details) (Income Approach Valuation Technique [Member], Level 3)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average cost of capital	15.00%	15.80%
Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Annual Sales Growth	-3.00%	3.00%
Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Annual Sales Growth	3.50%	9.80%

Employee_Benefit_Plans_and_Emp1

Employee Benefit Plans and Employment Agreements (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Employee Benefit Plans and Employment Agreements [Abstract]
Minimum employee contribution as a percent of gross pay	1.00%
Maximum employee contribution as a percent of gross pay	60.00%
Defined contribution plan company match, cost recognized	$0.50	$0.20	$0
Severance payments to executive officer, in months	6 months
Period of Non-Compete	1 year
Term of Retention Award	1 year
Period immediately preceding a change in control used to calculate a cash award under the Management Retention Plan	12 months

Lease_Commitments_Details

Lease Commitments (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Lease Commitments [Abstract]
Minimum rent	$38,720	$32,547	$33,378
Contingent rent	3,914	7,602	6,980
Maintenance, taxes and other	17,577	17,766	20,651
Amortization of deferred lease incentives	-2,229	-2,383	-3,237
Total rent expense	57,982	55,532	57,772
Future Minimum Rental Commitments
Less than 12 months	35,138
12 - 24 months	29,369
25 - 36 months	22,647
37 - 48 months	19,533
49 - 60 months	16,357
Greater than 60 months	48,977
Total minimum lease payments	172,021
Retail Store Operating Leases [Member]
Future Minimum Rental Commitments
Less than 12 months	34,866
12 - 24 months	29,254
25 - 36 months	22,629
37 - 48 months	19,533
49 - 60 months	16,357
Greater than 60 months	48,977
Total minimum lease payments	171,616
Operating Lease for Locations Not Yet Occupied [Member]
Future Minimum Rental Commitments
Total minimum lease payments	7,200
Operating lease term (in years)	10 years
Vehicle and Other Operating Leases [Member]
Future Minimum Rental Commitments
Less than 12 months	272
12 - 24 months	115
25 - 36 months	18
Total minimum lease payments	$405

Sources_of_Supply_Details

Sources of Supply (Details)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
	item
Major Vendors
Concentration Risk Number of Vendors	10
Merchandise purchased from ten largest vendors as a percent of total merchandise purchases	70.00%	70.00%	56.00%
Vendor One
Major Vendors
Percent of merchandise purchases from a single vendor	28.00%	19.00%	18.00%
Vendor Two
Major Vendors
Percent of merchandise purchases from a single vendor	10.00%	11.00%

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	3-May-14	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	4-May-13	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Segment Reporting
Restructuring and impairment costs									$216	$140	($5,161)
Impairment of store assets									216	140	424
Net sales	97,975	110,610	106,633	103,366	104,925	118,077	104,233	108,519	418,584	435,754	430,302
Depreciation and amortization									11,786	13,168	18,595
Operating income (loss)	-5,971	9,344	3,250	2,792	-518	8,613	-1	782	9,415	8,876	-15,965
Total assets	196,037				148,978				196,037	148,978	135,932
Retail Operations
Segment Reporting
Impairment of store assets									200	100	400
Net sales									418,584	435,754	430,302
Depreciation and amortization									9,166	9,757	14,122
Operating income (loss)									60,830	63,633	31,363
Total assets	95,538				95,631				95,538	95,631	96,454
Corporate/ Administrative
Segment Reporting
Depreciation and amortization									2,620	3,411	4,473
Operating income (loss)									-51,415	-54,757	-47,328
Total assets	$100,499				$53,347				$100,499	$53,347	$39,478

Related_Party_Transactions_Det

Related Party Transactions (Details) (G-III and its related entities, USD $)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
G-III and its related entities
Related Party Transactions
Aggregate payments made by the company or its subsidiaries to related party	$1,100,000	$1,200,000	$1,400,000
Balance due to related party	$12,000	$100,000

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Details) (USD $)	3 Months Ended								12 Months Ended
	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	3-May-14	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	4-May-13	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Quarterly Financial Data [Abstract]
Cumulative increase to rent expense due to error correction	$3,600,000
Decrease to operating income due to error correction	3,600,000								3,600,000
Decrease to net income, net of tax, due to error correction	2,200,000								2,200,000
Net sales	97,975,000	110,610,000	106,633,000	103,366,000	104,925,000	118,077,000	104,233,000	108,519,000	418,584,000	435,754,000	430,302,000
Operating income (loss)	-5,971,000	9,344,000	3,250,000	2,792,000	-518,000	8,613,000	-1,000	782,000	9,415,000	8,876,000	-15,965,000
Net income (loss)	$32,164,000	$8,983,000	$3,362,000	$2,616,000	($286,000)	$8,612,000	($265,000)	$629,000	$47,126,000	$8,690,000	($16,076,000)
Net income per share data:
Basic	$0.87	$0.24	$0.09	$0.07	($0.01)	$0.24	($0.01)	$0.02	$1.28	$0.24	($0.45)
Diluted	$0.86	$0.24	$0.09	$0.07	($0.01)	$0.23	($0.01)	$0.02	$1.24	$0.23	($0.45)