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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Lease Payments | As of December 31, 2017, future estimated minimum lease payments under non-cancelable operating, capital and financing leases were as follows (in thousands):
|  | Operating Leases |  | Capital Leases |  | Financing Obligations
2018 |  | $ | 3,659 |  | $ | 66 |  | $ | 2,792
2019 |  | 2,630 |  | — |  | 2,792
2020 |  | 2,235 |  | — |  | 2,792
2021 |  | 2,187 |  | — |  | 2,792
2022 |  | 1,887 |  | — |  | 2,564
Thereafter |  | 6,246 |  | — |  | 25,650
Total minimum lease payments |  | $ | 18,844 |  | 66 |  | 39,382
Less: Amount representing interest |  |  |  | (2) |  | (19,853)
Present value of capital lease and financing obligations |  |  |  | $ | 64 |  | $ | 19,529

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