Annual report pursuant to Section 13 and 15(d)

Property and Equipment, Net - Additional Information (Detail)

v2.4.0.8
Property and Equipment, Net - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense on property and equipment $ 3,043,000 $ 2,981,000 $ 2,971,000
Furniture, fixtures and equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Furniture, fixtures and equipment, net book value $ 0 $ 200,000