Quarterly report pursuant to Section 13 or 15(d)

Property, Plant, and Equipment - Additional Information (Detail)

v2.4.0.8
Property, Plant, and Equipment - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Property Plant And Equipment Disclosure [Line Items]        
Depreciation and amortization of property, plant and equipment $ 124,000 $ 93,000 $ 339,000 $ 275,000