Basis of Presentation	6 Months Ended
Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The interim condensed consolidated financial statements of Shenandoah Telecommunications Company and Subsidiaries (collectively, the “Company”) are unaudited. In the opinion of management, all adjustments necessary for a fair presentation of the interim results have been reflected therein in accordance with accounting principles generally accepted in the United States ("GAAP") for interim financial reporting and as required by Rule 10-01 of Regulation S-X. Accordingly, the unaudited condensed consolidated financial statements may not include all of the information and notes required by GAAP for audited financial statements. The information contained herein should be read in conjunction with the audited financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017. Adoption of New Accounting Principles There have been no 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 2017 Annual Report on Form 10-K, that would be expected to impact the Company except for the topics discussed below. The Company adopted ASU No. 2014-09, Revenue from Contracts with Customers ("Topic 606", or "the new revenue recognition standard"), and all related amendments, effective January 1, 2018, using the modified retrospective method as discussed in Note 2, Revenue from Contracts with Customers. The Company recognized the cumulative effect of applying the new revenue recognition standard as an adjustment to the opening balance of retained earnings. The comparative information has not been retrospectively modified and continues to be reported under the accounting standards in effect for those periods. In February 2016, the Financial Accounting Standards Board (FASB) issued ASU No. 2016-02, Leases (Topic 842), which requires lessees to recognize a right-of-use asset and a lease liability for all leases with terms greater than 12 months. The standard also requires disclosures by lessees and lessors about the amount, timing and uncertainty of cash flows arising from leases, as well as changes in the categorization of rental costs, from rent expense to interest and depreciation expense. Other effects may occur depending on the types of leases and the specific terms of them utilized by particular lessees. The ASU is effective for the Company on January 1, 2019, and early application is permitted. Modified retrospective application is required. In September 2017 and January 2018, the FASB issued ASU No. 2017-13, which included Revenue Recognition (Topic 605), Revenue from Contracts with Customers (Topic 606), Leases (Topic 840), and Leases (Topic 842), and ASU No. 2018-01, Leases (Topic 842), Land Easement Practical Expedient for Transition to Topic 842, and provided additional implementation guidance on ASU 2016-02. The Company has not yet completed its assessment of the impact of the new standard on the Company’s Consolidated Financial Statements. The Company is in the early stages of implementation and currently believes that the most notable impact to its financial statements upon the adoption of this ASU will be the recognition of a material right-of-use asset and a lease liability for its real estate and equipment leases. The Company is continuing to assess potential impacts that the standard may have on current accounting policies and procedures, and is implementing a new lease management system to assist in the application of the new standard. In February 2018, the FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU No. 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act. The amendments in this ASU also require certain disclosures about stranded tax effects. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption in any period is permitted. The Company is currently evaluating the impact of adopting ASU No. 2018-02.

Basis of Presentation

The interim condensed consolidated financial statements of Shenandoah Telecommunications Company and Subsidiaries (collectively, the “Company”) are unaudited. In the opinion of management, all adjustments necessary for a fair presentation of the interim results have been reflected therein in accordance with accounting principles generally accepted in the United States ("GAAP") for interim financial reporting and as required by Rule 10-01 of Regulation S-X. Accordingly, the unaudited condensed consolidated financial statements may not include all of the information and notes required by GAAP for audited financial statements. The information contained herein should be read in conjunction with the audited financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017.

Adoption of New Accounting Principles

There have been no 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 2017 Annual Report on Form 10-K, that would be expected to impact the Company except for the topics discussed below.

The Company adopted ASU No. 2014-09, Revenue from Contracts with Customers ("Topic 606", or "the new revenue recognition standard"), and all related amendments, effective January 1, 2018, using the modified retrospective method as discussed in Note 2, Revenue from Contracts with Customers. The Company recognized the cumulative effect of applying the new revenue recognition standard as an adjustment to the opening balance of retained earnings. The comparative information has not been retrospectively modified and continues to be reported under the accounting standards in effect for those periods.

In February 2016, the Financial Accounting Standards Board (FASB) issued ASU No. 2016-02, Leases (Topic 842), which requires lessees to recognize a right-of-use asset and a lease liability for all leases with terms greater than 12 months. The standard also requires disclosures by lessees and lessors about the amount, timing and uncertainty of cash flows arising from leases, as well as changes in the categorization of rental costs, from rent expense to interest and depreciation expense. Other effects may occur depending on the types of leases and the specific terms of them utilized by particular lessees. The ASU is effective for the Company on January 1, 2019, and early application is permitted. Modified retrospective application is required. In September 2017 and January 2018, the FASB issued ASU No. 2017-13, which included Revenue Recognition (Topic 605), Revenue from Contracts with Customers (Topic 606), Leases (Topic 840), and Leases (Topic 842), and ASU No. 2018-01, Leases (Topic 842), Land Easement Practical Expedient for Transition to Topic 842, and provided additional implementation guidance on ASU 2016-02. The Company has not yet completed its assessment of the impact of the new standard on the Company’s Consolidated Financial Statements. The Company is in the early stages of implementation and currently believes that the most notable impact to its financial statements upon the adoption of this ASU will be the recognition of a material right-of-use asset and a lease liability for its real estate and equipment leases. The Company is continuing to assess potential impacts that the standard may have on current accounting policies and procedures, and is implementing a new lease management system to assist in the application of the new standard.

In February 2018, the FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU No. 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act. The amendments in this ASU also require certain disclosures about stranded tax effects. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption in any period is permitted. The Company is currently evaluating the impact of adopting ASU No. 2018-02.