Quarterly report pursuant to Section 13 or 15(d)

Excess Lease Liability - Additional Information (Detail)

v2.4.0.8
Excess Lease Liability - Additional Information (Detail) (Excess lease facility [Member], USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Excess lease facility [Member]
   
Restructuring Cost and Reserve [Line Items]    
Estimated value of excess lease facility liability $ 3,324 $ 3,906
Amortization of excess lease facility $ 582