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Schedule II - Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Allowance for doubtful accounts [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of period | $ 9,173 | $ 13,392 | $ 9,995
Additions charged to costs and expenses | 1,262 | 1,286 | 3,798
Accounts written off | (2,024) | (4,642) | (1,496)
Translation adjustments | (180) | (863) | 1,095
Balance at end of period | 8,231 | 9,173 | 13,392
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of period | 200,280 | 207,483 | 152,752
Additions charged to costs and expenses | 5,659 | (1,821) | 35,646
Accounts written off | 0 | 0 | 0
Translation adjustments | (2,174) | (9,269) | 19,085
Balance at end of period | $ 203,765 | 200,280 | 207,483
Scenario, Adjustment [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Adjustment to foreign net operating loss carryforwards |  | $ (5,900) | $ (58,800)

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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