Annual report pursuant to Section 13 and 15(d)

Claims Settlement - Additional Information (Detail)

v3.6.0.2
Claims Settlement - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Claims Settlement [Line Items]      
Claim settlement received $ 14,500   $ 14,452
Settlement recognized as additional paid-in capital, net of tax     9,495
Benefit from income taxes   $ 14 5,722
Disgorgement settlement [Member]      
Claims Settlement [Line Items]      
Benefit from income taxes     $ 5,000