Commitments and Contingencies (Details) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Aug. 31, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($) item	Aug. 31, 2014 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
CAF annual funding	$ 4.4
Period of support service			6 years
Downstream broadband service data transfer rate (Mbps)			10
Number Of Eligible Locations To Offer Broadband | item			11,000
Revenue recognized from CAF first year funds		$ 1.1	$ 2.2
Jointly owned utility plant
Jointly Owned Utility Plant Interests [Line Items]
Cost of construction				$ 235.0
Company investment in construction costs of plant				$ 25.0
Paid to the cable contractor for the cable build		10.6	$ 10.6
Period of up-front payment received			25 years
Proceeds from sale of capacity			$ 27.0
Up Front Payment Received			5.7
Escrow deposit		$ 3.5	$ 3.5
Minimum
Jointly Owned Utility Plant Interests [Line Items]
Upstream broadband service data transfer rate (Mbps)			1