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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2016
Supplemental Cash Flow Information [Abstract] |
Schedule of Cash Flow, Supplemental Disclosures |
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
Non-cash investing and financing activities: |  |  |  |  |
Purchase of property and equipment in accounts payable | $ | 4,364 |  |  | $ | 1,784 |  |  | $ | 574 |
Additional cash payment information: |  |  |  |  |  |
Interest paid | 1,467 |  |  | 818 |  |  | 903 |
Income tax paid | 16,409 |  |  | 9,393 |  |  | 146 |

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