Basis of Presentation and Other Information (Policies)	6 Months Ended
Basis of Presentation and Other Information (Policies)	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Adoption of New Accounting Principles	Adoption of New Accounting Principles In November 2021, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2021-10, “Government Assistance (Topic 832), Disclosures by Business Entities About Government Assistance,” which requires entities to provide disclosures on material government assistance transactions for annual reporting periods. The disclosures include information about the nature of the assistance, the related accounting policies used to account for government assistance, the effect of government assistance on the entity’s financial statements and any significant terms and conditions of the agreements, including commitments and contingencies. On July 1, 2022, we adopted ASU 2021-10 and have included the new disclosure requirements in Note 10, Government Grants. Other than the matter described above, there have been no material developments related to recently issued accounting standards, including the expected dates of adoption and estimated effects on the Company's unaudited condensed consolidated financial statements and note disclosures, from those disclosed in the Company's 2021 Form 10-K, that would be expected to impact the Company.
Investment	SERP Investments at Fair Value: The Supplemental Executive Retirement Plan (“SERP”) is a benefit plan that provides deferred compensation to certain employees. The Company holds the related investments in a rabbi trust as a source of funding for future payments under the plan. The SERP’s investments were designated as trading securities and will be liquidated and paid out to the participants upon retirement. The benefit obligation to participants is always equal to the value of the SERP assets under ASC 710, Compensation. The fair value of the SERP investments are based on unadjusted quoted prices in active markets and are classified as Level 1 of the fair value hierarchy. Changes to the investments' fair value are presented in Other income (expense), while the reciprocal changes in the liability are presented in selling, general and administrative expense. At June 30, 2022 and December 31, 2021, $0.8 million of SERP investments were presented as prepaid expenses and other (current assets) as we intended to liquidate certain investments to pay the current portion of our SERP obligation. The obligation was paid on July 1, 2022. Cost Method Investments: Our investment in CoBank ACB’s Class A common stock represented substantially all of our cost method investments with a balance of $10.0 million and $10.3 million at June 30, 2022 and December 31, 2021, respectively. We recognized approximately $0.1 million and $1.0 million of patronage income in other income for the three months ended June 30, 2022 and 2021, respectively, and approximately $0.2 million and $2.0 million during the six months ended June 30, 2022 and 2021, respectively. Historically, approximately 75% of the patronage distributions were collected in cash and 25% in equity. Equity Method Investments: At June 30, 2022 and December 31, 2021, the Company had a 20.0% ownership interest in Valley Network Partnership (“ValleyNet”). The Company and ValleyNet purchase capacity on one another’s fiber network, through related party transactions. We recognized revenue of $0.2 million during both of the three months ended June 30, 2022 and 2021 and $0.4 million during both of the six months ended June 30, 2022 and 2021, respectively. We recognized cost of service of $26.2 thousand and $0.6 million for the three months ended June 30, 2022 and 2021, respectively, and $54.4 thousand and $1.1 million for the six months ended June 30, 2022 and 2021, respectively.