Derivative Instruments (Notes)

3 Months Ended

Sep. 30, 2011

Notes to Financial Statements [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

Derivative Instruments

The Company has international operations and is thus subject to foreign currency rate fluctuations.  To manage the risk of changes in foreign currency rates, the Company periodically enters into derivative contracts comprised of foreign currency forward contracts to hedge its asset and liability foreign currency exposure and a portion of its foreign currency operating expenses.  Approximately 99% of the Company's sales are U.S. Dollar denominated.  To date, the exposure related to foreign exchange rate volatility has not been material to the Company's operating results.  As of September 30, 2011 and March 31, 2011, the Company had no foreign currency derivatives outstanding.  The Company recognized an immaterial amount of net realized losses on foreign currency derivatives in the three and six months endedSeptember 30, 2011 and an immaterial amount of net realized gains on foreign currency derivatives in the three and six months endedSeptember 30, 2010.