Aggregate dividends declared 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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No definition available.

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Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	Mar. 06, 2018	Jan. 11, 2018	Dec. 18, 2017	Mar. 08, 2017	Mar. 31, 2018	Mar. 31, 2017
Dividends Payable [Line Items]
Payments of special dividends					$ 1,575	$ 0
Common Stock
Dividends Payable [Line Items]
Dividends per common share (in usd per share)	$ 0.125			$ 0.21875
Common Stock, Excluding Private Repurchase Participants
Dividends Payable [Line Items]
Dividends per common share (in usd per share)			$ 0.73
Payments of special dividends		$ 1,575