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Leases | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Leases | Leases Our leases primarily relate to office facilities that have remaining terms of up to 9.9 years, some of which include one or more options to renew with renewal terms of up to 5 years and some of which include options to terminate the leases within the next 6.7 years. All of our leases are classified as operating leases. The components of lease expense were as follows:
| Year Ended December 31,
| 2020 |  | 2019
| (in thousands)
Operating lease costs | $ | 14,881 |  |  | $ | 11,299 |
Short-term lease costs | 1,033 |  |  | 1,140 |
Variable lease costs | 4,870 |  |  | 3,388 |
Total lease costs | $ | 20,784 |  |  | $ | 15,827 |
Supplemental balance sheet information related to the operating leases was as follows:
| As of December 31,
| 2020 |  | 2019
| (in thousands, except lease term and discount rate)
Operating ROU assets | $ | 67,178 |  |  | $ | 60,984 |
Operating lease liabilities, current portion | $ | 9,612 |  |  | $ | 7,179 |
Operating lease liabilities, non-current portion | 75,737 |  |  | 72,294 |
Total operating lease liabilities | $ | 85,349 |  |  | $ | 79,473 |
Weighted average remaining lease terms (in years) - operating leases | 7.9 |  | 8.7
Weighted average discount rate - operating leases | 7.7 | % |  | 7.6 | %
Supplemental cash flow information related to leases was as follows:
| As of December 31,
| 2020 |  | 2019
| (in thousands)
Cash paid for amounts included in the measurement of lease liabilities | $ | 16,159 |  |  | $ | 11,720 |
ROU assets obtained in exchange for new lease obligations | $ | 15,838 |  |  | $ | 65,873 |
Maturities of operating lease liabilities as of December 31, 2020 were as follows (in thousands):
2021 | $ | 15,035 |
2022 | 13,887 |
2023 | 14,177 |
2024 | 13,464 |
2025 | 12,552 |
Thereafter | 41,958 |
Total lease payments | $ | 111,073 |
Less: imputed interest | (25,724) |
Total | $ | 85,349 |

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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