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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
ValuationAndQualifyingAccountsDisclosureLineItems |  |  |
Valuation Allowances and Reserves, Balance, Beginning Balance | $ 17,776 | $ 17,895 | $ 23,478
ValuationAllowancesAndReservesChargedToCostAndExpense | 1,471 | 1,951 | 2,605
ValuationAllowancesAndReservesChargedToOtherAccounts | 125 | (181) | (299)
ValuationAllowancesAndReservesDeductions | 7,050 | 1,889 | 7,889
Valuation Allowances and Reserves, Balance, Ending Balance | 12,322 | 17,776 | 17,895
Reduction of US corporate income tax rate | 4,300 |  |
ValuationAllowanceOfDeferredTaxAssetsMember |  |  |
ValuationAndQualifyingAccountsDisclosureLineItems |  |  |
Valuation Allowances and Reserves, Balance, Beginning Balance | 17,776 | 17,895 | 23,478
ValuationAllowancesAndReservesChargedToCostAndExpense | 1,471 | 1,951 | 2,605
ValuationAllowancesAndReservesChargedToOtherAccounts | 125 | (181) | (299)
ValuationAllowancesAndReservesDeductions | 7,050 | 1,889 | 7,889
Valuation Allowances and Reserves, Balance, Ending Balance | $ 12,322 | $ 17,776 | $ 17,895

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- Definition Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax, Reduction to US Corporate Income Tax Rate + References No definition available. + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to accounts other than costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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