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Leases (Supplemental Cash Flows Information) (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | $ 36,067 | $ 26,448
Financing cash flows from finance leases | 2,026 | 2,297
ROU assets obtained in exchange for lease obligations: |  |
Operating leases | 13,964 | 11,983
Finance leases | $ 3,143 | $ 6,006
Weighted average remaining lease term (in years) |  |
Operating leases | 8 years | 9 years
Finance leases | 3 years | 3 years
Weighted average discount rate (percent) |  |
Operating leases | 4.50% | 4.50%
Finance leases | 3.50% | 3.80%

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- Definition Amount of cash outflow for principal payment on finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 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)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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