The cash inflow from sale of machinery and equipment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfMachineryAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Subsequent Event (Details) - Subsequent Event [Member] - USD ($) $ in Millions	Aug. 01, 2016	Jul. 29, 2016	Jul. 11, 2016
Tower Sites [Member]
Subsequent Event [Line Items]
Proceeds from Sale of Machinery and Equipment	$ 91.0
Kodiak Kenai Fiber Link [Member]
Subsequent Event [Line Items]
Business Combination, Consideration		$ 20.0
Common Stock - Class A [Member]
Subsequent Event [Line Items]
Shares Repurchased, Parent			1,000,000
Shares Repurchased, Parent, Value		$ 16.1