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Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for Doubtful Accounts [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance, beginning of year | $ 1,761 | $ 1,695 | $ 2,081
Provision | 695 | (152) | 32
Write-offs, recoveries and discounts allowed | (688) |  | (363)
Other | (107) | 218 | (55)
Balance, end of year | 1,661 | 1,761 | 1,695
Allowance for Sales Discounts and Deductions [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance, beginning of year | 1,029 | 925 | 1,301
Provision | 2,075 | 1,191 | 690
Write-offs, recoveries and discounts allowed | (2,294) | (1,159) | (1,054)
Other | 22 | 72 | (12)
Balance, end of year | $ 832 | $ 1,029 | $ 925

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- Definition Valuation allowances and reserves write offs recoveries and discounts allowed. + References No definition available. + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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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