DERIVATIVES (NOTIONAL TABLE) (DETAILS) ₱ in Thousands, $ in Thousands, $ in Thousands	Dec. 31, 2017 PHP (₱)	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 PHP (₱)	Dec. 31, 2016 MXN ($)	Dec. 31, 2016 USD ($)
Derivative [Line Items]
Notional Amount						$ 15,000
Foreign Exchange Forward
Derivative [Line Items]
Notional Amount			$ 313,506			430,509
Foreign Exchange Forward | PHP
Derivative [Line Items]
Notional Amount	₱ 10,685,000		$ 219,917	₱ 14,315,000		301,134
% Maturing in the Next 12 Months	62.30%	62.30%	62.30%
Foreign Exchange Forward | MXN
Derivative [Line Items]
Notional Amount		$ 1,609,000	$ 93,589		$ 2,089,000	$ 129,375
% Maturing in the Next 12 Months	41.00%	41.00%	41.00%