EMPLOYEE BENEFIT PLANS - Schedule of Multiemployer Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Multiemployer Plans [Line Items]
Contributions and accruals	$ 3,412	$ 4,284	$ 3,285
SEIU National Industry Pension Fund
Multiemployer Plans [Line Items]
Contributions and accruals	910	845	659
New England Carpenters Pension Fund
Multiemployer Plans [Line Items]
Contributions and accruals	121	138	106
Plumbers and Pipefitters Pension Fund
Multiemployer Plans [Line Items]
Contributions and accruals	299	311	267
Rhode Island Laborers Pension Fund
Multiemployer Plans [Line Items]
Contributions and accruals	785	934	929
New England Teamsters Pension Fund
Multiemployer Plans [Line Items]
Contributions and accruals	361	582	541
Legacy And Adjustable Plan Of The UNITE HERE Retirement Fund
Multiemployer Plans [Line Items]
Contributions and accruals	$ 936	$ 1,474	$ 783