Annual report pursuant to Section 13 and 15(d)

Valuation Allowance of Deferred Tax Assets (Detail)

v3.6.0.2
Valuation Allowance of Deferred Tax Assets (Detail) - Valuation Allowance of Deferred Tax Assets - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]      
Beginning Balance $ 50,636 $ 52,873 $ 25,711
Additions 483 437 28,612
Deductions (36,595) [1] (2,674) (1,450)
Ending Balance $ 14,524 $ 50,636 $ 52,873
[1] See Note 16 for discussion of change in valuation allowance during the year ended December 31, 2016.