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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract] |
Future Minimum Lease Commitments under Operating and Capital Leases | Future minimum lease commitments under these operating and capital leases at December 31, 2016, are as follows (in thousands):
Years ending December 31, |  | Capital Leases |  |  | Operating leases |
2017 |  | $ | 74 |  |  | $ | 2,133 |
2018 |  |  | 24 |  |  |  | 2,092 |
2019 |  |  | 5 |  |  |  | 2,082 |
2020 |  |  | — |  |  |  | 2,041 |
2021 and thereafter |  |  | — |  |  |  | 1 |
Total minimum lease payments |  | $ | 103 |  |  | $ | 8,349 |
Less: amounts representing interest |  |  | (9 | ) |  |  |  |
Present value of minimum lease payments |  |  | 94 |  |  |  |  |
Less: current portion of obligations under capital leases |  |  | (68 | ) |  |  |  |
Long-term portion of obligations under capital leases |  | $ | 26 |  |  |  |  |

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