End date of current fiscal year in the format --MM-DD.

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- Definition

assets held for benefits under the plan

+ References

No definition available.

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- Definition

Vanguard inflation protected fund - plan asset allocation

+ References

No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of equity securities categorized neither as held-to-maturity nor as trading.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

+ References

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-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

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-Paragraph 1

-Subparagraph (b)(1)

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-Name Accounting Standards Codification

-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)

-URI http://asc.fasb.org/extlink&oid=6504226

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-Name Accounting Standards Codification

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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Description of target allocation percentages, or range of percentages, considering the major categories of plan assets as of the latest statement of financial position presented (on a weighted-average basis for employers with more than one plan) that are pertinent to an understanding of the plan investment policies and strategies.

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Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

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Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

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-Name Accounting Standards Codification

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Retirement plans Market value of plan assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013 Rate	Jan. 31, 2012 Rate	Jan. 31, 2011
Market value of plan assets [Line Items]
assets held for benefits under the plan	100.00%
Current Fiscal Year End Date	--01-31
Vanguard inflation protected fund	$ 279
High-quality inflation-indexed bonds issued by the U.S. Treasury and government agencies as well as domestic corporations	126
Fair value of plan assets	6,065	5,502	5,089
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	95.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	100.00%
Defined Benefit Plan, Target Allocation Percentage	0.1
Defined Benefit Plan, Actual Return on Plan Assets	574	342
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	8.00%	8.00%
Equity Securities [Member]
Market value of plan assets [Line Items]
Equity securities	3,343	3,018
Bonds [Member]
Market value of plan assets [Line Items]
U.S. bond market	2,183	1,968
US Treasury and Government [Member]
Market value of plan assets [Line Items]
U.S. bond market		268
Real Estate Funds [Member]
Market value of plan assets [Line Items]
High-quality inflation-indexed bonds issued by the U.S. Treasury and government agencies as well as domestic corporations		110
Fair Value, Inputs, Level 1 [Member]
Market value of plan assets [Line Items]
U.S. bond market	5,931	5,364
Money Market Funds [Member]
Market value of plan assets [Line Items]
U.S. bond market	$ 134	$ 138
Fixed Income Funds [Member]
Market value of plan assets [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	40.00%
Equity Securities [Member]
Market value of plan assets [Line Items]
Investment Owned, Percent of Net Assets	55.00%
Defined Benefit Plan, Target Plan Asset Allocations	60.00%
Money Market Funds [Member]
Market value of plan assets [Line Items]
Investment Owned, Percent of Net Assets	2.00%
Real Estate Funds [Member]
Market value of plan assets [Line Items]
Investment Owned, Percent of Net Assets	2.00%
Bonds [Member]
Market value of plan assets [Line Items]
Investment Owned, Percent of Net Assets	41.00%