Quarterly report pursuant to Section 13 or 15(d)

Business - Additional Information (Detail)

v3.2.0.727
Business - Additional Information (Detail)
6 Months Ended
Jun. 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