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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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
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The month and year (YYYY-MM) that the dividend to be paid was declared.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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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=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6513228

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DIVIDENDS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended			6 Months Ended
	Jun. 14, 2017	Mar. 15, 2017	Jul. 31, 2017	May 31, 2017	Feb. 28, 2017	Jun. 30, 2017	Jun. 30, 2016
Dividends per Share [Abstract]
Payment of cash dividends						$ 38,042	$ 39,698
Dividend Declared 2017-Q1 [Member]
Dividends per Share [Abstract]
Dividend payable, date declared						2017-02
Dividend payable per share (in dollars per share)					$ 0.36
Payment of cash dividends		$ 19,000
Dividend payable, date to be paid						Mar. 15, 2017
Dividend payable, date of record						Feb. 27, 2017
Dividend Declared 2017-Q2 [Member]
Dividends per Share [Abstract]
Dividend payable, date declared						2017-05
Dividend payable per share (in dollars per share)				$ 0.36
Payment of cash dividends	$ 19,100
Dividend payable, date to be paid						Jun. 14, 2017
Dividend payable, date of record						May 26, 2017
Dividend Declared 2017 Q3 [Member] \| Subsequent Event [Member]
Dividends per Share [Abstract]
Dividend payable, date declared			2017-07
Dividend payable per share (in dollars per share)			$ 0.36
Dividend payable, date to be paid			Sep. 13, 2017
Dividend payable, date of record			Aug. 25, 2017