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										9 Months Ended
	Sep. 07, 2017	Jun. 27, 2017	Jun. 12, 2017	Apr. 24, 2017	Apr. 05, 2017	Mar. 08, 2017	Sep. 12, 2016	Jun. 10, 2016	Mar. 08, 2016	Sep. 30, 2017	Sep. 30, 2016
Dividends Payable [Line Items]
Payments of special dividends										$ 4,872	$ 0
Common Stock
Dividends Payable [Line Items]
Dividends per common share (in usd per share)	$ 0.125		$ 0.125			$ 0.21875	$ 0.21875	$ 0.21875	$ 0.21875
Common Stock, Excluding Private Repurchase Participants
Dividends Payable [Line Items]
Dividends per common share (in usd per share)			$ 1.98		$ 0.28
Payments of special dividends		$ 4,271		$ 601