SEGMENT DISCLOSURE - Assets and Capital Expenditures and Loan Originations (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment disclosure
Total assets	$ 659,852		$ 1,342,401
Total capital expenditures	11,346	$ 12,805
Loan originations	27,421	53,320
Total capital expenditures and loan originations	38,767	66,125
Reportable segments | Office
Segment disclosure
Total assets	458,979		1,094,269
Total capital expenditures	9,500	11,462
Reportable segments | Hotel
Segment disclosure
Total assets	105,478		105,845
Total capital expenditures	1,846	$ 1,343
Reportable segments | Lending
Segment disclosure
Total assets	84,588		97,465
Non-segment
Segment disclosure
Total assets	$ 10,807		$ 44,822