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Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Valuation Allowance for Deferred Tax Assets [Member] |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Valuation allowance, Beginning balance | [1] | $ 44,999 | $ 48,037 | $ 50,519
Valuation allowance, Additions/Charges to Expense | [1] | 68 |  |
Valuation allowance, Deductions/ Other | [1] | (16,040) | (3,038) | (2,482)
Valuation allowance, Ending balance | [1] | 29,027 | 44,999 | 48,037
Valuation Allowance for Credit Losses [Member] |  |  |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Valuation allowance, Beginning balance |  | 31,964 | 24,836 | 22,534
Valuation allowance, Additions/Charges to Expense |  | 47,561 | 43,470 | 32,042
Valuation allowance, Deductions/ Other |  | (37,378) | (36,342) | (29,740)
Valuation allowance, Ending balance |  | $ 42,147 | $ 31,964 | $ 24,836
[1] | Amounts include both continuing and discontinued operations gross deferred tax balances.

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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(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: 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(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + 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(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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