NOTES PAYABLE AND COMMERCIAL BANK FINANCING - Bank Credit Agreement Narrative (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Jan. 03, 2017	Jul. 19, 2016	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Unamortized discount and debt issuance costs, net				$ 39,047	$ 43,449
(Gain) loss on extinguishment of debt				$ (1,404)	$ (23,699)	$ 0
Threshold percentage of aggregate broadcast cash flows used for defining material third-party licensees				20.00%
Bank Credit Agreement
Debt Instrument [Line Items]
Unamortized discount and debt issuance costs, net	$ 11,600	$ 2,700
Amortization of financing costs	7,700	$ 300
Unamortized debt discount	3,400
Debt issuance costs	$ 500
(Gain) loss on extinguishment of debt			$ (1,400)