Office Lease - Additional Information (Detail)
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12 Months Ended | 0 Months Ended | 1 Months Ended |
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Dec. 31, 2013
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Mar. 08, 2011
First Amendment
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Jul. 24, 2012
Second Amendment
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Lease agreement signed date | Apr. 24, 2008 | ||
Lease agreement commencement date | Jun. 01, 2008 | ||
Lease expiration date | Jun. 01, 2011 | ||
Extended lease expiration date | May 31, 2012 | Jul. 31, 2015 |