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Leases Leases Assets and Lease Liabilities (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Leases [Abstract] |  |
Operating lease assets | $ 83,000,000.0 | $ 83,200,000
Current Operating Lease Liabilities | 19,200,000 | 18,400,000
Non-Current Operating Lease Liabilities | 69,800,000 | 70,100,000
Total Lease Liabilities | 89,000,000.0 | 88,500,000
Lessee, Lease, Description [Line Items] |  |
Current Operating Lease Liabilities | 19,200,000 | 18,400,000
Other Current Liabilities [Member] |  |
Leases [Abstract] |  |
Current Operating Lease Liabilities | 19,200,000 | 18,400,000
Lessee, Lease, Description [Line Items] |  |
Current Operating Lease Liabilities | $ 19,200,000 | $ 18,400,000

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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=121603541&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + 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=121603541&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + 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=121603541&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under 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 (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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