PARTNERS' CAPITAL (Details)			3 Months Ended		12 Months Ended
	Mar. 15, 2017 $ / item	Jan. 03, 2012	Mar. 31, 2017 item $ / item	Mar. 31, 2016 $ / item	Dec. 31, 2016 $ / item	Aug. 20, 2007
Depositary receipts exchange ratio for Class A units | item			30
Quarterly distributions per depositary receipt (in dollars per receipt)					0.25
Quarterly distribution per unit (in dollars per unit)					7.50
Total distribution per unit (in dollars per unit)					54.00
Total distribution per depository receipt (in dollars per receipt)					1.80
Special distribution per unit (in dollars per unit)					24.00
Special distribution per depository receipt (in dollars per receipt)					0.80
Earnings per depository receipt
Net Income per Depositary Receipt (in dollars per receipt)			0.51	0.33
Distributions per Depositary Receipt (in dollars per share)			0.30	0.25
Limited Partner
Number of classes of partners | item			2
General Partnership
Number of classes of partners | item			1
Fixed distribution percentage of unit holders			1.00%
Class A
Fixed distribution percentage of unit holders			80.00%
Forward split of depositary receipts		3
Exchange ratio of depositary receipts for partnership units before adjustment		10
Exchange ratio of depositary receipts for partnership units after adjustment		30
Number of units in each depository receipt		0.03333				0.1
Class B
Fixed distribution percentage of unit holders			19.00%
Class A
Quarterly distribution per unit approved (in dollars per unit)	9.00
Quarterly distributions per depositary receipt (in dollars per receipt)	0.30