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STOCK BASED AND OTHER COMPENSATION PLANS - Additional Information (Details)																			12 Months Ended
	Feb. 15, 2019 USD ($)	Jul. 19, 2018 USD ($) installment shares	Apr. 24, 2018 USD ($) anniversary installment shares	Feb. 18, 2018 USD ($) shares	Dec. 21, 2017 USD ($) installment shares	Jun. 22, 2017 USD ($) anniversary installment shares	Jun. 19, 2017 USD ($) shares	Mar. 03, 2017 USD ($) anniversary installment shares	Feb. 18, 2017	Feb. 18, 2017	Feb. 18, 2017 shares	Feb. 18, 2017 USD ($)	Feb. 18, 2017 anniversary	Feb. 18, 2017 Vesting_Installment	Feb. 18, 2017 installment	Jan. 24, 2017 USD ($) shares	Feb. 18, 2016 USD ($) anniversary Vesting_Installment installment shares	Mar. 17, 2015	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Jan. 05, 2018 USD ($)	Dec. 29, 2017 USD ($)	Dec. 19, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted shares granted (in shares) \| shares																					0
Period of recognition for unrecognized compensation costs																			31 months	38 months	26 months
Remaining vesting period																			20 months 6 days	21 years 8 months 12 days	19 months 9 days
Unrecognized compensation cost																			$ 5,800,000	$ 14,500,000	$ 6,100,000
Accrued bonuses																								$ 49,300,000
Bonus payment allocated to equity based compensation					$ 15,500,000
Compensation bonus																						$ 16,800,000	$ 17,100,000
Bonus expense																					$ 17,640,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted shares granted (in shares) \| shares																			33,656	2,012,154	960,531
Bonus expense																			$ 8,831,000	$ 18,965,000	$ 17,640,000
2014 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus expense																			$ 8,831,000	$ 18,965,000
2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of recognition for unrecognized compensation costs					3 years				3 years
2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock \| Time-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments in which awards are vested \| installment																	3
Number of anniversaries in which awards are vested \| anniversary																	3
2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock \| Performance-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments in which awards are vested \| Vesting_Installment																	3
Minimum performance target percentage																	8.00%
Performance period																	3 years
2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock \| Time Based Vesting on Three Year Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments in which awards are vested \| installment					3										3
Number of anniversaries in which awards are vested \| anniversary													3
2014 Omnibus Incentive Plan \| Management Grantees \| Stock Options \| Time-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate grant date fair value of stock options granted																	$ 1,000,000
Fair value valuation assumptions: risk-free rate																	1.50%
Fair value valuation assumptions: dividend yield																	9.80%
Fair value valuation assumptions: Expected term																	6 years
Fair value valuation assumptions: volatility rate																	48.00%
2014 Omnibus Incentive Plan \| Board of Directors \| Restricted Stock \| Time-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate grant date fair value of stock options granted																	$ 100,000
2014 Omnibus Incentive Plan \| Michael Mazzei \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of recognition for unrecognized compensation costs						3 years
2014 Omnibus Incentive Plan \| Harris \| Restricted Stock \| Time-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
2014 Omnibus Incentive Plan \| Non-Management Grantee \| Restricted Stock \| Time Based Vesting on Three Year Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments in which awards are vested \| installment					3
2014 Deferred Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Days following the end of the participant’s employment																		60 days
Stock price, days following the end of the participant’s employment																		45 days
Units withdrawn (in shares) \| shares																				42,270
Units outstanding (in shares) \| shares																			380,662	321,476
Units unvested (in shares) \| shares																			130,389	182,983
Total employee's contribution, net of forfeitures and payouts related to terminations																			$ 5,900,000
Phantom Units1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total employee's contribution, net of forfeitures and payouts related to terminations																				$ 1,000,000
Phantom Units 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total employee's contribution, net of forfeitures and payouts related to terminations																				3,800,000
2018 Bonus Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus expense																			$ 34,500,000	$ 33,700,000	$ 29,200,000
Class A Common Stock \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted shares granted (in shares) \| shares		4,720	3,566	25,370															33,656	1,996,594	793,598
Number of installments in which awards are vested \| installment		3	3
Number of anniversaries in which awards are vested \| anniversary			3
Vesting period				1 year
Period of recognition for unrecognized compensation costs		3 years
Grant date fair value		$ 100,000	$ 100,000	$ 400,000
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted								$ 100,000
Number of restricted shares granted (in shares) \| shares								5,130
Number of installments in which awards are vested \| installment								3
Number of anniversaries in which awards are vested \| anniversary								3
Vesting period								3 years
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock \| Year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock \| Period 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock \| Period 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock \| Period 4
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock \| Period 5
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Restricted Stock \| Period 6
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Executive Officers \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted																	$ 9,100,000
Number of restricted shares granted (in shares) \| shares																	793,598
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted					$ 10,500,000							$ 10,200,000				$ 30,455
Number of restricted shares granted (in shares) \| shares					768,205						736,461					2,191
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock \| Time-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%					50.00%							50.00%
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock \| Performance-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%					50.00%							50.00%
Number of installments in which awards are vested					3									3	3
Number of anniversaries in which awards are vested \| anniversary													3
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock \| Period 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period																	3 years
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Management Grantees \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted shares granted (in shares) \| shares																	289,326
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Management Grantees \| Restricted Stock With Dividend Equivalent Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted												48,475
Number of restricted shares granted (in shares) \| shares											3,500
Cash dividends received												1,000,000
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Board of Directors \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted												200,000
Number of restricted shares granted (in shares) \| shares											16,245						12,636
Vesting period									1 year
Class A Common Stock \| 2014 Omnibus Incentive Plan \| New Employee \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted												400,000
Number of restricted shares granted (in shares) \| shares											28,881
Number of installments in which awards are vested \| Vesting_Installment														2
Number of anniversaries in which awards are vested \| installment															2
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Michael Mazzei \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted						$ 100,000
Number of restricted shares granted (in shares) \| shares						5,346
Number of installments in which awards are vested \| installment						3
Number of anniversaries in which awards are vested \| anniversary						3
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Non-Management Grantee \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value of awards granted					$ 5,000,000		$ 300,000					$ 600,000
Number of restricted shares granted (in shares) \| shares					369,328		21,307				40,000
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Non-Management Grantee \| Restricted Stock \| Time-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Non-Management Grantee \| Restricted Stock \| Performance-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Number of installments in which awards are vested \| installment					3
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Non-Management Grantee \| Restricted Stock \| Period 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,775
Class A Common Stock \| 2014 Omnibus Incentive Plan \| Non-Management Grantee \| Restricted Stock \| Period 7
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected To Vest (in shares) \| shares							1,780
Class A Common Stock \| 2014 Deferred Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Days following the end of the participant’s employment																		3 years
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accrued bonuses	$ 61,400,000
Bonus payment allocated to equity based compensation	$ 26,600,000