Summary of Significant Accounting Policies (Policies)	3 Months Ended
Aug. 31, 2013
Disclosure Summary Of Significant Accounting Policies Additional Information [Abstract]
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In July 2013, the FASB issued an accounting standards update intended to provide guidance on the presentation of unrecognized tax benefits, reflecting the manner in which an entity would settle, at the reporting date, any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. This accounting standard will be effective for the Company beginning June 1, 2014; early adoption is permitted. The Company has early adopted this guidance and the adoption did not have a material impact on the Company's consolidated financial position or results of operations. In July 2012, the FASB issued an accounting standards update intended to simplify how an entity tests indefinite-lived intangible assets other than goodwill for impairment by providing entities with an option to perform a qualitative assessment to determine whether further impairment testing is necessary. This accounting standard update was effective for the Company beginning June 1, 2013. The adoption did not have a material impact on the Company's consolidated financial position or results of operations. In June 2011, the FASB issued guidance on the presentation of comprehensive income. This guidance required companies to present reclassification adjustments out of accumulated other comprehensive income by component in either the statement in which net income is presented or as a separate disclosure in the notes to the financial statements. This requirement was effective for the Company beginning June 1, 2013. As this guidance only amends the presentation of the components of comprehensive income the adoption did not have an impact on the Company’s consolidated financial position or results of operations. In December 2011, the FASB issued guidance enhancing disclosure requirements surrounding the nature of an entity’s right to offset related arrangements associated with its financial instruments and derivative instruments. This new guidance requires companies to disclose both gross and net information about instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to master netting arrangements. This new guidance was effective for the Company beginning June 1, 2013. As this guidance only requires expanded disclosures, the adoption did not have an impact on the Company's consolidated financial position or results of operations.

Recently Adopted Accounting Standards

In July 2013, the FASB issued an accounting standards update intended to provide guidance on the presentation of unrecognized tax benefits, reflecting the manner in which an entity would settle, at the reporting date, any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. This accounting standard will be effective for the Company beginning June 1, 2014; early adoption is permitted. The Company has early adopted this guidance and the adoption did not have a material impact on the Company's consolidated financial position or results of operations.

In July 2012, the FASB issued an accounting standards update intended to simplify how an entity tests indefinite-lived intangible assets other than goodwill for impairment by providing entities with an option to perform a qualitative assessment to determine whether further impairment testing is necessary. This accounting standard update was effective for the Company beginning June 1, 2013. The adoption did not have a material impact on the Company's consolidated financial position or results of operations.

In June 2011, the FASB issued guidance on the presentation of comprehensive income. This guidance required companies to present reclassification adjustments out of accumulated other comprehensive income by component in either the statement in which net income is presented or as a separate disclosure in the notes to the financial statements. This requirement was effective for the Company beginning June 1, 2013. As this guidance only amends the presentation of the components of comprehensive income the adoption did not have an impact on the Company’s consolidated financial position or results of operations.

In December 2011, the FASB issued guidance enhancing disclosure requirements surrounding the nature of an entity’s right to offset related arrangements associated with its financial instruments and derivative instruments. This new guidance requires companies to disclose both gross and net information about instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to master netting arrangements. This new guidance was effective for the Company beginning June 1, 2013. As this guidance only requires expanded disclosures, the adoption did not have an impact on the Company's consolidated financial position or results of operations.