STOCKHOLDERS' EQUITY - Redemption Table (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Number of eligible shares redeemed (in shares)	233	63	0
Aggregate dollar amount of shares redeemed	$ 2,285	$ 603	$ 0
Average redemption price per share (in dollars per share)	$ 9.81	$ 9.57	$ 0.00

Number of stock bought back by the entity at the exercise price or redemption price.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Name:	us-gaap_StockRedeemedOrCalledDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration