Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Aggregate dividends declared during the period for each share of common stock outstanding.

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EARNINGS PER SHARE - (Narrative) (Details) - $ / shares				1 Months Ended				3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
EARNINGS PER SHARE - (Narrative) (Details) - $ / shares	Mar. 13, 2018	Feb. 16, 2018	Mar. 01, 2017	Dec. 31, 2017	Nov. 30, 2017	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2017	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Dividends declared per share of common stock (in dollars per share)			$ 0.08		$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.16	$ 0.24	$ 0.32	$ 0.27	$ 0.18
Common stock, dividends, per share, cash paid				$ 1,100,000		$ 1,100,000	$ 1,100,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends declared per share of common stock (in dollars per share)		$ 0.08
Common stock, dividends, per share, cash paid	$ 1,000,000