|
Long-lived Assets by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2012
|
Dec. 31, 2011
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|---|---|---|---|---|
| Segment Reporting Information [Line Items] | ||||
| Long-lived assets | $ 39,086 | $ 20,695 | $ 9,467 | $ 1,698 |
|
North America
|
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| Segment Reporting Information [Line Items] | ||||
| Long-lived assets | 28,561 | 15,820 | 7,859 | 1,013 |
|
Europe
|
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| Segment Reporting Information [Line Items] | ||||
| Long-lived assets | 9,320 | 4,537 | 1,391 | 500 |
|
Asia Pacific and other
|
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| Segment Reporting Information [Line Items] | ||||
| Long-lived assets | $ 1,205 | $ 338 | $ 217 | $ 185 |