REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	1 Months Ended	4 Months Ended	8 Months Ended	9 Months Ended
	Dec. 31, 2017	Mar. 31, 2018	Nov. 21, 2017	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 54,364	$ 169,957		$ 420,317
Telecom
Disaggregation of Revenue [Line Items]
Revenue		102,288		203,732
E-commerce & Consumer
Disaggregation of Revenue [Line Items]
Revenue		14,546		56,797
Financial & Business Services
Disaggregation of Revenue [Line Items]
Revenue		21,539		40,325
Media & Cable
Disaggregation of Revenue [Line Items]
Revenue		4,781		39,529
Travel & Hospitality
Disaggregation of Revenue [Line Items]
Revenue		16,235		38,167
Healthcare & Education
Disaggregation of Revenue [Line Items]
Revenue		3,323		19,254
Energy, Power & utility
Disaggregation of Revenue [Line Items]
Revenue		4,102		7,539
All other segments
Disaggregation of Revenue [Line Items]
Revenue		$ 3,143		$ 14,974
Predecessor
Disaggregation of Revenue [Line Items]
Revenue			$ 310,120
Predecessor | Telecom
Disaggregation of Revenue [Line Items]
Revenue			202,161
Predecessor | E-commerce & Consumer
Disaggregation of Revenue [Line Items]
Revenue			23,194
Predecessor | Financial & Business Services
Disaggregation of Revenue [Line Items]
Revenue			32,970
Predecessor | Media & Cable
Disaggregation of Revenue [Line Items]
Revenue			7,696
Predecessor | Travel & Hospitality
Disaggregation of Revenue [Line Items]
Revenue			24,017
Predecessor | Healthcare & Education
Disaggregation of Revenue [Line Items]
Revenue			4,937
Predecessor | Energy, Power & utility
Disaggregation of Revenue [Line Items]
Revenue			7,569
Predecessor | All other segments
Disaggregation of Revenue [Line Items]
Revenue			$ 7,576