The number of fiber route miles in the Company's fiber network.

No definition available.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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- Definition

The net cash inflow or cash outflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

+ References

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-Publisher FASB
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-Section S99
-Paragraph 3
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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Subsequent Events (Details) $ in Millions	3 Months Ended	6 Months Ended
Subsequent Events (Details) $ in Millions	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross		$ 2.8	$ 9.6
Proceeds from (Repayments of) Lines of Credit		$ 0.0	$ (89.5)
Subsequent Event [Member]
Subsequent Event [Line Items]
Fiber Route Miles	14,000
Hawaiian Telcom Holdco, Inc. [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Business Combination, Consideration Transferred	$ 657.7
Payments to Acquire Businesses, Gross	536.5
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	121.2
Revolving Credit Facility [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from (Repayments of) Lines of Credit	35.0
Accounts Receivable Securitization Facility [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from (Repayments of) Lines of Credit	$ 154.0