Note 2 Recent Accounting Pronouncements and Accounting Changes	3 Months Ended
Jun. 30, 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.

Note 2 Recent Accounting Pronouncements and Accounting Changes

3 Months Ended

Jun. 30, 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.