OVERVIEW AND BASIS OF PRESENTATION (Details)	Dec. 13, 2018 USD ($) $ / shares shares	Jul. 20, 2018 USD ($) $ / shares shares	Nov. 22, 2017 USD ($)	Oct. 27, 2017 USD ($)	Dec. 31, 2018 employee customer country $ / shares	Mar. 31, 2018 $ / shares	Jan. 23, 2018 $ / shares
Business Acquisition [Line Items]
Number of countries | country					13
Number of employees (over) | employee					47,500
Number of clients (over) | customer					225
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01			$ 0.01	$ 0.01	$ 0.01
Aegis Stockholder
Business Acquisition [Line Items]
Ownership by Aegis Stockholder, percentage	56.00%
Number of shares issued and sold (in shares) | shares	368,098
Share price (in dollars per share) | $ / shares	$ 6.52
Total purchase price	$ 2,400,000
Aegis
Business Acquisition [Line Items]
Stock consideration (based on shares outstanding immediately prior the closing date) | shares		16,226,392
Closing share price on July 20, 2018 | $ / shares		$ 6.81
Total allocable purchase price		$ 110,502,000
Aegis | Common Stock
Business Acquisition [Line Items]
Closing share price on July 20, 2018 | $ / shares		$ 12
Cash consideration		$ 2,000,000
Aegis | Common Stock | Aegis Stockholder
Business Acquisition [Line Items]
Stock consideration (based on shares outstanding immediately prior the closing date) | shares		20,600,000
Business acquisition, number of additional shares (in shares) | shares		166,667
Ownership by Aegis Stockholder, shares | shares		20,766,667
Ownership by Aegis Stockholder, percentage		55.00%
ESM Holdings Limited
Business Acquisition [Line Items]
Cash consideration			$ 153,910,000
Percentage of interests acquired			100.00%
Total allocable purchase price			$ 280,000,000
Term loan
Business Acquisition [Line Items]
Face amount of debt				$ 140,000,000
Debt term				5 years
Term loan | ESM Holdings Limited
Business Acquisition [Line Items]
Face amount of debt				$ 140,000,000
Debt term				5 years