Long-Lived Assets	6 Months Ended
Long-Lived Assets	Jun. 30, 2013
Long-Lived Assets [Abstract]
Long-Lived Assets	Note 4. Long-Lived Assets We review long-lived assets, including intangible assets subject to amortization, for impairment if certain events or changes in circumstances indicate impairment may be present. Impairment exists if the carrying value of a long-lived asset exceeds the sum of the undiscounted future cash flows expected to result from the use and eventual disposal of the asset at the date it is tested. If the carrying value is no longer recoverable based upon the undiscounted future cash flows of the asset, an impairment equal to the difference between the carrying amount and the fair value of the asset is recognized. In the first quarter of 2013, an impairment test was performed in response to indicators that the carrying amount of certain customer relationship intangible assets and property, plant and equipment related to providing wireless Internet to customers in the Fargo, North Dakota market may not be recoverable due to our decision to phase out this service. During the impairment review, we determined the carrying value of these particular intangibles, property and equipment were impaired. Fair value was calculated using the income approach of valuation. The income approach utilizes the discounted cash flow method. It requires the use of estimates and judgments about the future income expected to be derived from the use or ownership of an asset. In the first quarter of 2013, an impairment charge of $633,000 was recognized within our Fiber and Data Segment. Minor adjustments to fully recognize the impairment on all related assets resulted in an additional $5,000 impairment charge in the second quarter to bring the final year-to-date impairment recognition to $638,000. There were no such charges in 2012.

Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported.

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