Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Total Amounts of Unrecognized Tax Benefits Excluding Interest and Penalties (Detail)

v3.3.1.900
Income Taxes - Reconciliation of Total Amounts of Unrecognized Tax Benefits Excluding Interest and Penalties (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits      
Balance at beginning of the period $ 181 $ 1,940 $ 840
Increases (decreases) as a result of tax positions taken in prior years (181) (1,901) 145
Increases as a result of tax positions taken in the current year 0 142 955
Balance at end of the period $ 0 $ 181 $ 1,940