SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION - SCHEDULE OF ACCUMULATED DEPRECIATION (Details) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Balance - Beginning of Year	$ 216,332	$ 182,599	$ 153,592
Depreciation	39,525	34,816	29,841
Total Additions	39,525	34,816	29,841
Deletions	(1,488)	(1,083)	(834)
Balance - End of Year	$ 254,369	$ 216,332	$ 182,599