STOCKHOLDERS' EQUITY - Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands			9 Months Ended
	Sep. 14, 2016	May 16, 2016	Sep. 30, 2016
Tender Offer and Private Purchase
Purchase price, repurchase of common stock			$ 290,134
Common Stock
Tender Offer and Private Purchase
Cash tender offer number of shares		10,000,000
Price per share of cash tender offer (in dollars per share)		$ 21.00
Repurchase of common stock (in shares)		10,000,000
Purchase price		$ 210,000
Tender offer fees and expenses		$ 301
Shares repurchased as percent to outstanding shares		10.24%
Urban Partners II, LLC | Common Stock
Tender Offer and Private Purchase
Repurchase of common stock (in shares)	3,628,116
Purchase price		$ 208,140
Purchase price, repurchase of common stock	$ 79,819
Share price of stock repurchased (in usd per share)	$ 22.00