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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2023
Supplemental Cash Flow Information |
Supplemental cash flow information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended December 31,
​ |  | 2023 |  | 2022 |  | 2021
​ | ​ | (In thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash paid during the period for: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest | ​ | $ | 100 | ​ | $ | 145 | ​ | $ | 253
Income taxes | ​ | $ | 2,790 | ​ | $ | 4,160 | ​ | $ | 3,450
Non-cash transactions: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Barter revenue | ​ | $ | 2,402 | ​ | $ | 2,431 | ​ | $ | 2,125
Barter expense | ​ | $ | 2,452 | ​ | $ | 2,477 | ​ | $ | 2,124
Acquisition of property and equipment | ​ | $ | 55 | ​ | $ | 2 | ​ | $ | —
Use of treasury shares for 401(k) match | ​ | $ | 256 | ​ | $ | 249 | ​ | $ | 221
​

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