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Leases - Balance Sheet Location (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating leases |  |
Operating lease right-of-use assets | $ 16,069 | $ 11,280
Other current liabilities | 2,553 | 2,268
Long-term operating lease liabilities | 13,516 | 9,012
Total operating lease liabilities | 16,069 | 11,280
Finance leases |  |
Property, plant, and equipment | 1,116 | 3,426
Property, plant, and equipment | (869) | (2,892)
Property, plant, and equipment - net | 247 | 534
Current maturities of long-term debt | 119 | 377
Long-term debt | 128 | 157
Total finance lease liabilities | $ 247 | $ 534
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Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:LiabilitiesCurrentAbstract | us-gaap:LiabilitiesCurrentAbstract

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- Definition Present value of lessee's discounted obligation for lease payments 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 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 Reference 2: 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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