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Right-Of-Use Assets and Lease Liabilities - Operating Leases and Finance Leases (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Leases [Abstract] |  |  |
Operating lease expense | $ 5,711 | $ 4,221 | $ 3,850
Amortization of ROU assets - finance leases | 224 | 101 | 44
Interest on lease liabilities - finance leases | 84 | 74 | 11
Total Lease Expense | 6,019 | 4,396 | $ 3,905
Operating Lease, Assets And Liabilities, Lessee [Abstract] |  |  |
ROU assets | 46,245 | 47,686 |
Operating cash flows | 6,489 | 5,028 |
Finance Leases |  |  |
ROU assets | 1,278 | 1,513 |
Operating cash flows | 84 | 47 |
Financing cash flows | $ 180 | $ 57 |
Weighted Average Lease Term - Years |  |  |
Operating leases | 18 years 8 months 12 days | 19 years 2 months 4 days |
Finance leases | 12 years 1 month 2 days | 12 years 1 month 28 days |
Weighted Average Discount Rate |  |  |
Operating leases | 5.90% | 5.94% |
Finance leases | 5.81% | 5.73% |

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 + Details
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- Definition Amount of amortization expense attributable to right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 + Details
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