CAPITAL TRANSACTIONS - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 03, 2017	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Class of Stock [Line Items]
Net proceeds from issuance of redeemable preferred stock			$ 52,051	$ 1,167
Cumulative Redeemable Preferred Stock, Series E [Member]
Class of Stock [Line Items]
Additional shares issued (in shares)		1,700,000	2,100,000
Preferred stock, dividend rate			7.50%		7.50%
Average price per share, net (in dollars per share)		$ 24.79	$ 24.77
Net proceeds from issuance of redeemable preferred stock		$ 42,100	$ 51,900
Cumulative Redeemable Preferred Stock, Series E [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Additional shares issued (in shares)	0