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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended |
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Jun. 30, 2021 | Jan. 01, 2021
Accounting Policies [Abstract] |  |
Lease liability | $ 47,746 | $ 49,700
Operating lease right-of-use assets | 31,988 | $ 33,400
Market value threshold to qualify as an emerging growth company | $ 700,000 |

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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 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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