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Commitments and Contingencies - Additional Information (Detail) In Thousands, unless otherwise specified | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2012 USD ($) | Jun. 30, 2011 USD ($) | May 04, 2012 GBP (£) | Mar. 06, 2012 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Future minimum payments under initial terms of leases | $ 11 |  |  |
Rental expense for continuing operations | 39 | 45 |  |
Annual payments related to commitments | 645 |  |  |
Dispute settlement amount |  |  | £ 23 | $ 73

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