TREASURY STOCK (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015	Oct. 29, 2014	Aug. 19, 2014
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares	6,083,098	6,056,719
Treasury stock, value	$ 150,804,000	$ 150,804,000
Additional shares available to repurchase, value	$ 149,196,000
Class A Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchased amount				$ 200,000,000
Additional shares authorized, value			$ 100,000,000
Repurchase Program [Member] | Class A Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares	6,050,000
Treasury stock, value	$ 150,804,000