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Statement - Consolidated Statements Of Operations (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00400 - Statement - Consolidated Statement Of Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 00505 - Statement - Consolidated Statements Of Cash Flows (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Background And Organization link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Basis Of Presentation And Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Change In Estimate link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Note Payable link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Income Per Share Of Common Stock link:presentationLink link:calculationLink link:definitionLink 10701 - 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Segment Reporting (Revenue And Long-Lived Asset Information For Geographic Areas) (Details) link:presentationLink link:calculationLink link:definitionLink 41301 - Disclosure - Commitments And Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 41401 - Disclosure - Merger Agreement With Zayo Group, LLC (Details) link:presentationLink link:calculationLink link:definitionLink