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v3.21.2

Leases - Lease cost and other information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Lease Cost Components: |  |  |  |  |
Amortization of ROU assets - finance leases | $ 117 | $ 125 | $ 350 | $ 172 |
Interest on lease liabilities - finance leases | 14 | 19 | 43 | 24 |
Operating lease cost (cost resulting from lease payments) | 4,292 | 4,557 | 12,977 | 9,873 |
Short-term lease expense | 116 | 253 | 327 | 450 |
Variable lease cost (cost excluded from lease payments) | 783 | 370 | 2,073 | 739 |
Total lease cost | 5,322 | 5,324 | 15,770 | 11,258 |
Supplemental Cash Flow and Other Information Related to Leases: |  |  |  |  |
Finance lease - operating cash flows | 14 | 19 | 43 | 27 |
Finance lease - financing cash flows | 107 | 109 | 320 | 150 |
Operating lease - operating cash flows (fixed payments) | 4,127 | 4,307 | 12,440 | 8,763 |
Operating lease - operating cash flows (net change asset/liability) | (3,215) | (3,290) | (9,691) | (5,968) |
New ROU assets - operating leases | $ 4,196 | $ 1,475 | $ 5,494 | 41,211 |
New ROU assets - finance leases |  |  |  | $ 5,374 |
Weighted - average remaining lease term (years) - finance leases | 6 years 7 months 28 days | 7 years 7 months 28 days | 6 years 7 months 28 days | 7 years 7 months 28 days |
Weighted - average remaining lease term (years) - Operating leases | 10 years 11 months 15 days | 11 years 7 months 6 days | 10 years 11 months 15 days | 11 years 7 months 6 days |
Weighted - average discount rate - finance leases | 1.70% | 1.70% | 1.70% | 1.70% |
Weighted - average discount rate - Operating leases | 3.30% | 3.30% | 3.30% | 3.30% |
Maturity Analysis of Lease Liabilities: |  |  |  |  |
2021 (excluding the nine months ended September 30, 2021) | $ 4,081 |  | $ 4,081 |  |
2022 | 15,550 |  | 15,550 |  |
2023 | 14,856 |  | 14,856 |  |
2024 | 13,125 |  | 13,125 |  |
2025 | 11,597 |  | 11,597 |  |
Thereafter | 82,061 |  | 82,061 |  |
Total undiscounted cash flows | 141,270 |  | 141,270 |  |
Discount on cash flows | (24,909) |  | (24,909) |  |
Total operating lease liabilities | $ 116,361 |  | $ 116,361 |  | $ 118,300

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