Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional Information (Detail)

v3.2.0.727
Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]          
Amortization expenses of intangible assets $ 323 $ 360 $ 646 $ 719 $ 1,422