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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract] |
Supplemental cash flow information |
|  | Years Ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (In thousands) |
Cash paid during the period for: |  |  |  |  |  |  |  |  |  |  |  |
Interest |  | $ | 884 |  |  | $ | 850 |  |  | $ | 636 |
Income taxes |  | $ | 2,864 |  |  | $ | 2,420 |  |  | $ | 6,555 |
Non-cash transactions: |  |  |  |  |  |  |  |  |  |  |  |
Barter revenue |  | $ | 3,570 |  |  | $ | 3,618 |  |  | $ | 3,471 |
Barter expense |  | $ | 3,677 |  |  | $ | 3,367 |  |  | $ | 3,217 |
Purchase of treasury shares in connection with exercise of stock options |  | $ | — |  |  | $ | 826 |  |  | $ | — |
Acquisition of property and equipment |  | $ | 11 |  |  | $ | 8 |  |  | $ | 49 |
Use of treasury shares for 401(k) match |  | $ | 252 |  |  | $ | 274 |  |  | $ | 258 |

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- References No definition available. + Details
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