Consolidated Statements Of Operations (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Non-cash compensation expense				$ 19,471	$ 16,677
Provision for doubtful accounts	[1]			1,012	17,504
Oi S.A. [Member]
Provision for doubtful accounts					16,498
Selling, General And Administrative [Member]
Non-cash compensation expense		$ 10,030	$ 8,785	$ 18,856	16,471
Selling, General And Administrative [Member] | Oi S.A. [Member]
Provision for doubtful accounts			$ 16,498		$ 16,498

[1] Includes the impact of the $16,498 Oi reserve for the six months ended June 30, 2016.