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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Summary of Significant Accounting Policies |
Activity in the allowance for doubtful accounts | A provision for credit losses is recorded based on our judgment of the collectability of receivables. Amounts are written off when determined to be fully uncollectible. Delinquent accounts are based on contractual terms. The activity in the allowance for credit losses during the years ended December 31, 2023, 2022 and 2021 was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  | ​ |  |  | ​ |  | Write Off of |  |  | ​
​ | ​ | Balance | ​ | Charged to | ​ | Uncollectible | ​ | Balance at
​ | ​ | at Beginning | ​ | Costs and | ​ | Accounts, Net of | ​ | End of
Year Ended |  | of Period |  | Expenses |  | Recoveries |  | Period
​ | ​ | (in thousands)
December 31, 2023 | ​ | $ | 519 | ​ | $ | 397 | ​ | $ | (298) | ​ | $ | 618
December 31, 2022 | ​ | $ | 469 | ​ | $ | 408 | ​ | $ | (358) | ​ | $ | 519
December 31, 2021 | ​ | $ | 648 | ​ | $ | 56 | ​ | $ | (235) | ​ | $ | 469
Property and equipment | ​ Property and equipment consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Estimated |  | December 31,
​ |  | Useful Life |  | 2023 |  | 2022
​ | ​ | (In thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Land and land improvements |  | ​ | — | ​ | $ | 15,239 | ​ | $ | 15,259
Buildings |  | ​ | 31.5 years | ​ |  | 40,460 | ​ |  | 40,823
Towers and antennae |  | ​ | 7-15 years | ​ |  | 27,145 | ​ |  | 26,992
Equipment |  | ​ | 3-15 years | ​ |  | 54,747 | ​ |  | 52,459
Furniture, fixtures and leasehold improvements |  | ​ | 7-20 years | ​ |  | 7,907 | ​ |  | 7,741
Vehicles |  | ​ | 5 years | ​ |  | 2,767 | ​ |  | 2,780
​ |  | ​ | ​ | ​ |  | 148,265 | ​ | ​ | 146,054
Accumulated depreciation |  | ​ | ​ | ​ |  | (96,860) | ​ |  | (92,856)
Net property and equipment | ​ | ​ | ​ | ​ | $ | 51,405 | ​ | $ | 53,198
​
Schedule of computation of basic and diluted earnings per share | The following table sets forth the computation of basic and diluted earnings per share: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  | ​ | ​ | ​ | ​
​ |  |  | Years Ended December 31,
​ |  |  | 2023 |  | 2022 |  | 2021
​ | ​ |  | (In thousands, except per share data)
Numerator: | ​ | ​ | ​ |  |  | ​ |  | ​ | ​ |
Net income | ​ | ​ | $ | 9,500 | ​ | $ | 9,202 | ​ | $ | 11,157
Less: Income allocated to unvested participating securities | ​ | ​ |  | 149 | ​ |  | 140 | ​ | ​ | 190
Net income available to common shareholders | ​ | ​ | $ | 9,351 | ​ | $ | 9,062 | ​ | $ | 10,967
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​
Denominator for basic earnings per share — weighted average shares | ​ | ​ |  | 6,045 | ​ |  | 5,973 | ​ | ​ | 5,917
Effect of dilutive securities: | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​
Common stock equivalents | ​ | ​ |  | — | ​ |  | — | ​ | ​ | —
Denominator for diluted earnings per share — adjusted weighted-average shares and assumed conversions | ​ | ​ |  | 6,045 | ​ |  | 5,973 | ​ | ​ | 5,917
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share: | ​ | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​
Basic | ​ | ​ | $ | 1.55 | ​ | $ | 1.52 | ​ | $ | 1.85
Diluted | ​ | ​ | $ | 1.55 | ​ | $ | 1.52 | ​ | $ | 1.85
​

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