DEVELOPMENT (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
DEVELOPMENT [Abstract]
Percentage of Property Occupation by Tenants when Development Cost Ceased Being Capitalized	90.00%	80.00%
Length of Time After Project Completion When Development Cost are no Longer Capitalized	1 year	1 year