Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Sep. 30, 2013	Mar. 31, 2013
Derivative [Line Items]
Percentage Of Company Sales Denominated In Us Dollars	99.00%
Notional Amount of Foreign Currency Derivatives		$ 6.0

Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Name:	us-gaap_NotionalAmountOfForeignCurrencyDerivatives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant