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Leases (Narrative) (Details) - USD ($) $ in Thousands | Jan. 01, 2019 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Leased right-of-use assets |  | $ 33,288 | $ 37,040
Operating lease liability |  | $ 42,790 | $ 47,177
Accounting Standards Update 2016-02 [Member] |  |  |
Leased right-of-use assets | $ 38,300 |  |
Operating lease liability | 40,400 |  |
Cumulative-effect adjustment on retained earnings | $ 300 |  |
Minimum [Member] |  |  |
Lease term |  | 1 month |
Maximum [Member] |  |  |
Lease term |  | 20 years |

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- Definition Term of lessee's 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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