Note 2 Recent Accounting Pronouncements and Accounting Changes	9 Months Ended
Dec. 31, 2012
New Accounting Pronouncements and Changes In Accounting Principles [Abstract]
Recent Accounting Pronouncements and Accounting Changes [Text Block]	2. Recent Accounting Pronouncements and Accounting Changes In June 2011, the Financial Accounting Standards Board, or FASB, issued authoritative guidance on the presentation of comprehensive income. Under the guidance, an entity has the option to present the total of comprehensive income, the components of net income and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The guidance was effective for us in the fiscal year beginning on April 1, 2012. Although adopting the guidance did not impact the accounting for comprehensive income, it affected the presentation of components of comprehensive income by eliminating the historical practice of showing these items within the consolidated statements of stockholders' equity. In July 2012, FASB issued authoritative guidance on testing indefinite-lived intangible assets for impairment. Under the amendments in this guidance, an entity has the option to assess qualitative factors to determine whether it is more likely than not that the intangible asset is impaired. If an entity concludes that it is not more likely than not that the indefinite-lived intangible asset is impaired, the entity is not required to take further action. If an entity concludes otherwise, then it is required to determine the fair value of the indefinite-lived asset and perform the quantitative impairment test by comparing the fair value with the carrying value. The amendments are effective for us in the fiscal year beginning on April 1, 2013 and early adoption is permitted. We do not expect any current impact from the amendments since we do not have any indefinite-lived intangible assets, but the amendments may affect us in the future if we acquire indefinite-lived intangible assets.

Note 2 Recent Accounting Pronouncements and Accounting Changes

9 Months Ended

Dec. 31, 2012

New Accounting Pronouncements and Changes In Accounting Principles [Abstract]

Recent Accounting Pronouncements and Accounting Changes [Text Block]

2. Recent Accounting Pronouncements and Accounting Changes

In June 2011, the Financial Accounting Standards Board, or FASB, issued authoritative guidance on the presentation of comprehensive income. Under the guidance, an entity has the option to present the total of comprehensive income, the components of net income and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The guidance was effective for us in the fiscal year beginning on April 1, 2012. Although adopting the guidance did not impact the accounting for comprehensive income, it affected the presentation of components of comprehensive income by eliminating the historical practice of showing these items within the consolidated statements of stockholders' equity.

In July 2012, FASB issued authoritative guidance on testing indefinite-lived intangible assets for impairment. Under the amendments in this guidance, an entity has the option to assess qualitative factors to determine whether it is more likely than not that the intangible asset is impaired. If an entity concludes that it is not more likely than not that the indefinite-lived intangible asset is impaired, the entity is not required to take further action. If an entity concludes otherwise, then it is required to determine the fair value of the indefinite-lived asset and perform the quantitative impairment test by comparing the fair value with the carrying value. The amendments are effective for us in the fiscal year beginning on April 1, 2013 and early adoption is permitted. We do not expect any current impact from the amendments since we do not have any indefinite-lived intangible assets, but the amendments may affect us in the future if we acquire indefinite-lived intangible assets.