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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2016
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information |
| Three months ended |  | Nine months ended
| September 30, 2016 |  | September 30, 2015 |  | September 30, 2016 |  | September 30, 2015
Supplemental disclosures: | (in thousands)
Interest paid | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Income taxes paid | $ | 8,551 |  |  | $ | 6,321 |  |  | $ | 19,398 |  |  | $ | 17,167 |
Non-cash investing and financing activities: |  |  |  |  |  |  |  |  |  |  |
Non-cash capital expenditures | $ | (1,211 | ) |  | $ | (17 | ) |  | $ | 101 |  |  | $ | (190 | )

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- References No definition available. + Details
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