NOTES PAYABLE AND COMMERCIAL BANK FINANCING - Schedule of Indebtedness Under Notes Payable, Capital Leases and the Bank Credit Agreement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
2016	$ 167,237
2017	83,920
2018	247,951
2019	19,502
2020	620,144
2021 and thereafter	2,759,350
Total minimum payments	3,898,104
Less: Discount	(3,618)
Less: Deferred financing cost	(38,709)	$ (41,844)
Less: Amount representing future interest	(22,433)
Net carrying value of debt	3,833,344
Capital Leases
Debt Instrument [Line Items]
2016	4,792
2017	4,819
2018	4,846
2019	4,957
2020	4,704
2021 and thereafter	33,089
Total minimum payments	57,207
Less: Discount	0
Less: Deferred financing cost	0
Less: Amount representing future interest	(22,433)
Net carrying value of debt	34,774
Notes and Bank Credit Agreement
Debt Instrument [Line Items]
2016	162,445
2017	79,101
2018	243,105
2019	14,545
2020	615,440
2021 and thereafter	2,726,261
Total minimum payments	3,840,897
Less: Discount	(3,618)
Less: Deferred financing cost	(38,709)
Less: Amount representing future interest	0
Net carrying value of debt	$ 3,798,570