XML 58 R44.htm IDEA: XBRL DOCUMENT v3.10.0.1
Revenue - Activity in Allowance for Doubtful Accounts Receivable (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]      
Balance, beginning of period $ (4,799) $ (3,873) $ (5,045)
Provision increase (1,505) (2,086) (1,595)
Amounts written off, net of recoveries 2,269 1,305 2,551
Foreign currency translation adjustments and other 123 (145) 216
Balance, end of period $ (3,912) $ (4,799) $ (3,873)