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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Leases |  |
Other non-current assets | $ 12,018 | $ 12,858
Accrued liabilities | 3,634 | 3,972
Other long-term liabilities | 8,469 | 8,989
Total operating lease liabilities | 12,103 | 12,961
Finance Leases |  |
Property, plant and equipment, gross | 471 | 524
Accumulated Depreciation | (242) | (265)
Property, plant and equipment, net | 229 | 259
Current maturities of long-term debt and finance lease obligations | 76 | 90
Long-term debt and finance lease obligations, net of current maturities | 145 | 174
Total finance lease liabilities | $ 221 | $ 264
Operating Leases Weighted Average Remaining Lease Term | 5 years 18 days | 5 years 1 month 6 days
Finance Leases Weighted Average Remaining Lease Term | 3 years 5 months 1 day | 3 years 5 months 19 days
Operating Lease Weighted Average Discount Rate (as percent) | 3.31% | 3.29%
Finance Lease Weighted Average Discount Rate (as percent) | 3.43% | 3.39%

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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=77888426&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=77888419&loc=SL77918627-209977 + Details
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