REAL ESTATE - Investments (Details) $ in Thousands, ft² in Millions	Jun. 30, 2020 USD ($) ft² numberOfProperties	Jan. 31, 2020 numberOfProperties	Nov. 13, 2019 numberOfProperties
Real Estate Properties [Line Items]
Number of real estate properties			7
Rentable square feet | ft²	2.6
Percentage of real estate occupied	78.00%
Real estate | $	$ 806,253
Office Properties
Real Estate Properties [Line Items]
Number of real estate properties	4
Office Campus
Real Estate Properties [Line Items]
Number of real estate properties	1	1
Office Buildings, Campus
Real Estate Properties [Line Items]
Number of real estate properties	3