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Basis Of Presentation (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Basis of Accounting [Line Items]
Operating lease right of use assets	$ 156,626,000	$ 161,435,000	$ 69,869,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]			Other assets
Operating lease liabilities	167,072,000	169,909,000	$ 77,270,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]			Other liabilities
Retained Earnings [Member]
Basis of Accounting [Line Items]
Cumulative change due to ASU	$ 4,214,000	$ 4,214,000		$ 0

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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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

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Indicates line item in statement of financial position that includes operating lease liability.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918631-209977

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Amount of lessee's right to use underlying asset under operating lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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Indicates line item in statement of financial position that includes operating lease right-of-use asset.

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-Name Accounting Standards Codification
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-SubTopic 20
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