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Business - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2016
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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Organization consolidation and presentation of financial statements disclosure.

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