Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Additional Information (Detail)

v2.4.0.8
Fair Value Measurement - Additional Information (Detail) (Fair Value, Measurements, Nonrecurring [Member], Hercules Note [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Fair Value, Measurements, Nonrecurring [Member] | Hercules Note [Member]
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Note payable $ 14.9