STOCKHOLDERS’ EQUITY - Summary of Class A Common Stock in Registered Public Offerings (Details) - Class A Common Stock - $ / shares shares in Thousands	Jan. 17, 2018	Jan. 08, 2018	Jun. 27, 2017	May 05, 2017	Mar. 27, 2017	Feb. 06, 2017
Class of Stock [Line Items]
Number of shares (in shares)			10,000	10,000	10,000	11,500
Net purchase price per share (usd per share)			$ 23.3000	$ 23.1200	$ 20.7800	$ 18.2875
Public Stock Offering
Class of Stock [Line Items]
Number of shares (in shares)	19,207	11,000
Net purchase price per share (usd per share)	$ 27.14	$ 26.0500
Public Stock Offering - Shares Offered By The Company
Class of Stock [Line Items]
Number of shares (in shares)	17,700
Public Stock Offering - Shares Issued by TPG
Class of Stock [Line Items]
Number of shares (in shares)	1,500