German Subsidy - Additional Information (Detail) (Germany) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		3 Months Ended
	Dec. 31, 2006 EUR (€) Employee	Feb. 29, 2012 USD ($) Seat Employee	Feb. 28, 2013 USD ($)	Feb. 29, 2012 Production Services Seat	Feb. 29, 2012 Selling, General and Administrative Seat
Subsidiary or Equity Method Investee [Line Items]
Subsidy received from government	€ 335
Number of employees to be added	5
Total number of employee	45	34
Monitoring period	5 years
Monitoring entry date	2009-02
Monitoring expiration date	2014-02
Extended expiration date	2017-02
Positions eliminated		10		8	2
Payment for settlement of subsidy		62
Payment for settlement of subsidy accumulated interest		12
Remaining liability for the subsidy			$ 251