Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill - Additional Information (Detail)

v3.5.0.2
Intangible Assets and Goodwill - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]        
Intangible assets and goodwill impairment     $ 0  
Amortization expenses $ 14,000 $ 14,000 $ 42,000 $ 49,000