Segment Information (Details)	Mar. 31, 2018
Fiber Comm LC [Member]
Segment Information (Details) [Line Items]
Equity Method Investment, Ownership Percentage	20.00%
Broadband Visions LLC [Member]
Segment Information (Details) [Line Items]
Equity Method Investment, Ownership Percentage	24.30%
Independent Emergency Services LLC [Member]
Segment Information (Details) [Line Items]
Equity Method Investment, Ownership Percentage	14.29%
SM Broadband LLC [Member]
Segment Information (Details) [Line Items]
Equity Method Investment, Ownership Percentage	12.50%