Business - Additional Information (Detail) |
9 Months Ended |
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Sep. 30, 2015 | |
| Maryland [Member] | |
| Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] | |
| Company re-incorporated date | Mar. 24, 2011 |
| Delaware [Member] | |
| Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] | |
| Company re-incorporated date | May 25, 2004 |
| California [Member] | |
| Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] | |
| Company originally incorporated date | Jun. 14, 1997 |
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- Definition Organization consolidation and presentation of financial statements disclosure. No definition available.
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