Related-Party Transactions | 9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Related Party Transactions [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related-Party Transactions | Related-Party Transactions: One of the Company’s current directors is a managing director of various investment funds affiliated with one of the Company’s greater than 5% stockholders. These funds own interest in a company that provides services to the Company’s customers, including handset insurance programs. Pursuant to the Company’s agreement with this related-party, the Company bills its customers directly for these services and remits the fees collected from its customers for these services to the related-party. In addition, the Company receives compensation for selling handsets to the related-party. One of the Company’s current directors is the chairman of an equity firm that owns interest in a company that provides wireless caller ID with name services to the Company. Pursuant to an additional agreement with this related-party, the Company receives compensation for providing access to the Company’s line information database/calling name data storage to the related-party. One of the Company’s current directors is a managing director of various investment funds affiliated with one of the Company’s greater than 5% stockholders. These funds own interest in a company that provides advertising services to the Company. One of the Company’s current directors is a managing director of various investment funds affiliated with one of the Company’s greater than 5% stockholders. These funds own interest in a company that provides distributed antenna systems ("DAS") leases and maintenance to wireless carriers, including the Company. In addition, another of the Company’s current directors is a general partner of various investment funds which own interest in the same company. These DAS leases are accounted for as capital or operating leases in the Company’s financial statements. Transactions associated with the related-parties described above are included in various line items in the accompanying condensed consolidated balance sheets, condensed consolidated statements of income and comprehensive income, and condensed consolidated statements of cash flows. The following tables summarize the transactions with related-parties (in millions):
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