DERIVATIVES (NOTIONAL TABLE) (Details) ₱ in Thousands, $ in Thousands, $ in Thousands	Mar. 31, 2019 PHP (₱)	Mar. 31, 2019 MXN ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 PHP (₱)	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 USD ($)
Derivative [Line Items]
Notional Amount			$ 101,500			$ 70,400
Foreign Exchange Forward
Derivative [Line Items]
Notional Amount			150,624			188,665
Foreign Exchange Forward | PHP
Derivative [Line Items]
Notional Amount	₱ 5,270,000		$ 102,622	₱ 6,710,000		130,957
% Maturing in the Next 12 Months	60.50%	60.50%	60.50%
Foreign Exchange Forward | MXN
Derivative [Line Items]
Notional Amount		$ 932,500	$ 48,002		$ 1,091,500	$ 57,708
% Maturing in the Next 12 Months	57.60%	57.60%	57.60%