Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities - Additional Information (Detail)

v3.3.1.900
Accrued Liabilities - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Accrued Liabilities [Line Items]    
Severance and termination benefit $ 3,896 $ 3,323
Severance and Termination Benefit    
Accrued Liabilities [Line Items]    
Severance and termination benefit $ 1,700 $ 1,700