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Right-of-Use Asset and Lease Liabilities - Supplemental Balance Sheet Lease Information (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets: |  |
Operating lease assets | $ 18,008 | $ 19,491
Finance lease assets | 428 | 464
Total leased assets | 18,436 | 19,955
Current |  |
Operating | 5,594 | 5,515
Finance | 175 | 183
Non-current |  |
Long-term lease obligations | 15,609 | 17,202
Long-term lease obligations | 258 | 282
Total lease obligations | 21,636 | 23,182
Accumulated amortization | 10,435 | 9,083
Accumulated depreciation of assets under finance leases | $ 74 | $ 28
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accrued expenses and other current liabilities | Accrued expenses and other current liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other liabilities | Other liabilities

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