| Short-Term Revolving Lines of Credit (Details) In Thousands, unless otherwise specified | Mar. 31, 2013
 Netherlands [Member]
 USD ($) | Mar. 31, 2012
 Netherlands [Member]
 USD ($) | Mar. 31, 2013
 India [Member]
 USD ($) | Mar. 31, 2012
 India [Member]
 USD ($) | Mar. 31, 2012
 Australia [Member]
 USD ($) | Mar. 31, 2013
 Japan [Member]
 USD ($) | Mar. 31, 2012
 Japan [Member]
 USD ($) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 USD ($) | Mar. 31, 2012
 Revolving Credit Facility [Member]
 USD ($) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 Netherlands [Member]
 USD ($) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 Netherlands [Member]
 EUR (€) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 India [Member]
 USD ($) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 India [Member]
 INR | Mar. 31, 2013
 Revolving Credit Facility [Member]
 Australia [Member]
 USD ($) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 Australia [Member]
 AUD | Mar. 31, 2013
 Revolving Credit Facility [Member]
 Japan [Member]
 USD ($) | Mar. 31, 2013
 Revolving Credit Facility [Member]
 Japan [Member]
 JPY (¥) | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Short-Term Revolving Lines of Credit | |||||||||||||||||
| Maximum borrowing capacity | $ 5,126 | € 4,000 | $ 1,471 | 80,000 | $ 339 | 325 | $ 477 | ¥ 45,000 | |||||||||
| Outstanding borrowings | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 |