SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
ValuationAndQualifyingAccountsDisclosureLineItems
Valuation Allowances and Reserves, Balance, Beginning Balance	$ 11,646	$ 12,322	$ 17,776
ValuationAllowancesAndReservesChargedToCostAndExpense	1,305	108	1,471
ValuationAllowancesAndReservesChargedToOtherAccounts	(22)	17	125
ValuationAllowancesAndReservesDeductions	9,543	801	7,050
Valuation Allowances and Reserves, Balance, Ending Balance	3,386	11,646	12,322
Reduction of US corporate income tax rate			4,300
Capital Loss Carryforward, Expired	5,700
ValuationAllowanceOfDeferredTaxAssetsMember
ValuationAndQualifyingAccountsDisclosureLineItems
Valuation Allowances and Reserves, Balance, Beginning Balance	11,646	12,322	17,776
ValuationAllowancesAndReservesChargedToCostAndExpense	1,305	108	1,471
ValuationAllowancesAndReservesChargedToOtherAccounts	(22)	17	125
ValuationAllowancesAndReservesDeductions	9,543	801	7,050
Valuation Allowances and Reserves, Balance, Ending Balance	$ 3,386	$ 11,646	$ 12,322

Amount capital loss carryforwards that expired.

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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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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

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- Definition

Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

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Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense.

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Amount of decrease in valuation and qualifying accounts and reserves.

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