Recently Issued Accounting Pronouncements	9 Months Ended
Oct. 31, 2011
Recently Issued Accounting Pronouncements [Abstract]
Recently Issued Accounting Pronouncements	2. Recently Issued Accounting Pronouncements In January 2010, the Financial Accounting Standards Board ("FASB") issued an accounting standards update that amended fair value measurements and disclosures and aimed to improve the transparency of financial reporting of assets and liabilities measured at fair value. The update required new disclosures for transfers in and out of Level 1 and Level 2 and the basis for such transfers. Also required are disclosures for activity in Level 3, including purchase, sale, issuance and settlement information. Lastly, it clarified guidance regarding disaggregation and disclosure of information about valuation techniques and inputs used to measure fair value for both recurring and non-recurring fair value measurements in Level 2 and Level 3 categories. We adopted the provisions of this accounting standards update effective February 1, 2010, except for the requirement to disclose purchases, sales, issuances, and settlements related to Level 3 measurements, which we adopted February 1, 2011. This adoption had no impact on our financial condition, results of operations or cash flows. In May 2011, the FASB issued an additional update that amended fair value measurements and disclosures. This amendment provides that the inputs and measures used to value assets that fall within Level 3 of the valuation hierarchy be quantitatively presented. Application is required prospectively for interim and annual periods beginning after December 15, 2011. Other than the change in presentation, this accounting standards update will not have an impact on our financial position and results of operations. In June 2011, the FASB issued an accounting standards update that requires an increase in the prominence of other comprehensive income and its components within the financial statements. The update provides entities the option to present the components of net income and other comprehensive income in either one or two consecutive financial statements. It also eliminates the option to present other comprehensive income in the statements of changes in shareholders' equity. Application is to be applied retrospectively and is effective for interim and annual periods beginning after December 15, 2011. Other than the change in presentation, this accounting standards update will not have an impact on our financial position and results of operations.

2. Recently Issued Accounting Pronouncements

In January 2010, the Financial Accounting Standards Board ("FASB") issued an accounting standards update that amended fair value measurements and disclosures and aimed to improve the transparency of financial reporting of assets and liabilities measured at fair value. The update required new disclosures for transfers in and out of Level 1 and Level 2 and the basis for such transfers. Also required are disclosures for activity in Level 3, including purchase, sale, issuance and settlement information. Lastly, it clarified guidance regarding disaggregation and disclosure of information about valuation techniques and inputs used to measure fair value for both recurring and non-recurring fair value measurements in Level 2 and Level 3 categories. We adopted the provisions of this accounting standards update effective February 1, 2010, except for the requirement to disclose purchases, sales, issuances, and settlements related to Level 3 measurements, which we adopted February 1, 2011. This adoption had no impact on our financial condition, results of operations or cash flows.

In May 2011, the FASB issued an additional update that amended fair value measurements and disclosures. This amendment provides that the inputs and measures used to value assets that fall within Level 3 of the valuation hierarchy be quantitatively presented. Application is required prospectively for interim and annual periods beginning after December 15, 2011. Other than the change in presentation, this accounting standards update will not have an impact on our financial position and results of operations.

In June 2011, the FASB issued an accounting standards update that requires an increase in the prominence of other comprehensive income and its components within the financial statements. The update provides entities the option to present the components of net income and other comprehensive income in either one or two consecutive financial statements. It also eliminates the option to present other comprehensive income in the statements of changes in shareholders' equity. Application is to be applied retrospectively and is effective for interim and annual periods beginning after December 15, 2011. Other than the change in presentation, this accounting standards update will not have an impact on our financial position and results of operations.