INCOME TAXES - Additional Information (Details) - USD ($)		3 Months Ended	11 Months Ended	12 Months Ended
	Jan. 31, 2017	Sep. 30, 2016	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Corporate taxes payable				$ 800,000	$ 4,300,000
Prepaid taxes				13,400,000	12,500,000
Net deferred tax assets				2,100,000	5,000,000.0
Deferred tax asset relating to capital losses				5,700,000	5,200,000
Interest and penalties recognized for uncertain tax positions				$ 0	0
Percentage of applicable cash saving in income tax distributable to specified unitholders			85.00%	85.00%
Percentage of applicable cash saving in income tax available for the entity			15.00%	15.00%
Amount due pursuant to tax receivable agreement				$ 2,520,000	1,910,000
Accrued Expenses
Income Tax Contingency [Line Items]
Liability for unrecognized tax benefits for uncertain income tax positions				800,000	800,000
Indemnity Counterparty
Income Tax Contingency [Line Items]
Settlements receivable				3,300,000
Indemnity Counterparty | Subsequent Event
Income Tax Contingency [Line Items]
Amount recovered from indemnity counterparty	$ 3,300,000
State and Local Jurisdiction | New York
Income Tax Contingency [Line Items]
Unincorporated business taxes payable (receivable)				400,000	$ 1,100,000
Income tax expense (benefit)		$ 3,300,000
State income tax payable				3,300,000
Estimated insurance recovery recorded as other income and fees				3,300,000
Fee and other income				$ 500,000