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Targets Combined Operating Results (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Dec. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011
Business Acquisition [Line Items] |  |  |  |  |  |
Revenue | $ 2,049 |  |  | $ 1,957 | $ 4,252 | $ 5,788
Gross profit | 1,122 |  |  | 1,167 | 2,277 | 3,731
Operating expenses | 4,701 |  |  | 7,282 | 11,341 | 11,002
Income from operations | (3,579) |  |  | (6,115) | (9,064) | (7,271)
Non-operating expenses, net | (602) |  |  | (731) | (1,612) | (1,246)
Provision for income tax | 33 |  |  | 32 | 66 | 64
Net income | (4,214) | (3,775) | (2,753) | (6,878) | (10,742) | (8,580)
Targets |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Revenue |  |  |  |  | 1,780 |
Cost of goods sold |  |  |  |  | 707 |
Gross profit |  |  |  |  | 1,073 |
Operating expenses |  |  |  |  | 675 |
Income from operations |  |  |  |  | 398 |
Non-operating expenses, net |  |  |  |  | 178 |
Provision for income tax |  |  |  |  | 33 |
Net income |  |  |  |  | $ 187 |

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