Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation Accounts (Detail)

v3.3.1.900
Schedule II - Valuation Accounts (Detail) - Allowance for Doubtful Accounts - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance $ 627 $ 703 $ 1,105
Additions charged to cost and expense 117 226 29
Additions from acquired company     115
Others (143) (302) (546)
Balance $ 601 $ 627 $ 703