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Summary Of Balance Sheet Information Related To Operating Leases (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Leases |  |
ROU assets | $ 209,169 | $ 223,369
Current portion of operating lease liabilities | 70,232 | 68,199
Operating lease liabilities | 139,527 | 154,271
Total operating lease liabilities | $ 209,759 | $ 222,470
Weighted Average Remaining Lease Term (in years) |  |
Operating leases | 3 years 6 months | 3 years 10 months 24 days
Weighted Average Discount Rate |  |
Operating leases | 4.00% | 4.48%

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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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