Annual report pursuant to Section 13 and 15(d)

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - Valuation and Qualifying Accounts (Detail)

v3.3.1.900
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - Valuation and Qualifying Accounts (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year $ 2,363 $ 914 $ 1,087
Additions Charged to Income 3,377 3,676 3,661
Deduction (3,422) (2,227) (3,834)
Balance at End of Year $ 2,318 $ 2,363 $ 914