Quarterly report pursuant to sections 13 or 15(d)

Notes Payable - Additional Information (Detail)

v2.4.0.6
Notes Payable - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Debt Instrument [Line Items]    
Fair value of notes payable $ 187,984 $ 184,883