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Note 6 - Commitments and Contingencies | 6 Months Ended
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Jun. 30, 2020
Notes to Financial Statements |
Commitments and Contingencies Disclosure [Text Block] | 6. Commitments and Contingencies Operating Leases The Company leases its headquarters and laboratory facilities in South San Francisco, California under a non-cancelable lease agreement for approximately 59,000 square feet. The lease began in June 2015 and ends in March 2026 and contains extension of lease term and expansion options. The Company had deposits of $603,000 included in long-term assets as of June 30, 2020 and December 31, 2019, restricted from withdrawal and held by a bank in the form of collateral for an irrevocable standby letter of credit held as security for the lease of the South San Francisco facility. The Company also leases laboratory and office space in Austin, Texas under a lease that expires in January 2029 and includes options for expansion and early termination in 2025. The Company provided a cash security deposit for this lease of $139,000, included in other assets in the Company’s condensed consolidated balance sheets as of June 30, 2020 and December 31, 2019. Future minimum lease payments under non-cancelable operating leases as of June 30, 2020 are as follows (in thousands of dollars):
Year Ending December 31, |  |  |  |
Remainder of 2020 |  | $ | 1,175 |
2021 |  |  | 2,401 |
2022 |  |  | 2,472 |
2023 |  |  | 2,543 |
2024 |  |  | 2,614 |
Thereafter |  |  | 4,227 |
Total future minimum lease payments |  |  | 15,432 |
Less: amount representing interest |  |  | 3,201 |
Present value of future lease payments |  |  | 12,231 |
Less: short-term lease liabilities |  |  | 1,495 |
Long-term lease liabilities |  | $ | 10,736 |
The Company recognizes operating lease expense on a straight-line basis over the non-cancelable lease period. Operating lease expense was $0.5 million for each of the three months ended June 30, 2020 and 2019 and $1.0 million for each of the six months ended June 30, 2020 and 2019. Contingencies From time to time, the Company may be involved in legal proceedings arising in the ordinary course of business. The Company assesses contingencies to determine the degree of probability and range of possible loss for potential accrual in its condensed consolidated financial statements. An estimated loss contingency is accrued in the financial statements if it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company believes there is no legal proceeding pending that could have, either individually or in the aggregate, a material adverse effect on the Company’s condensed consolidated financial statements.

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