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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 | Supplemental cash flows and non-cash transactions were as follows for the periods indicated (in thousands):
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
Cash paid for interest | $ | 447 |  |  | $ | 180 |  |  | $ | 559 |
Cash paid for income taxes, net of refunds | 8,754 |  |  | 20,499 |  |  | 28,004 |
Non-cash transactions: |  |  |  |  |
Change in accounts payable related to capital expenditures | $ | 1,658 |  |  | $ | (3,534 | ) |  | $ | (3,479 | )
Insurance premium financed by note payable | — |  |  | 7,630 |  |  | — |
Value of shares issued for Blackhawk Group acquisition | 144,047 |  |  | — |  |  | — |

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