Annual report pursuant to Section 13 and 15(d)

Corrections to Previously Issued Consolidated Financial Statements - Schedule of Unaudited Quarterly Impact on Company's Financial Statements (Detail)

v3.6.0.2
Corrections to Previously Issued Consolidated Financial Statements - Schedule of Unaudited Quarterly Impact on Company's Financial Statements (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2015
Accounting Changes and Error Corrections [Abstract]          
Unaudited quarterly impact $ 796 $ 381 $ 234 $ 173 $ 1,584