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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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

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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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Subsequent Event (Details) - $ / shares	Jul. 25, 2018	Jun. 15, 2018	Mar. 16, 2018
Subsequent event
Quarterly cash dividend declared (in dollars per share)		$ 0.135	$ 0.135
Dividends payable date of record		May 25, 2018	Feb. 23, 2018
Subsequent event
Subsequent event
Dividends payable date declared	Jul. 25, 2018
Quarterly cash dividend declared (in dollars per share)	$ 0.135
Dividends payable date to be paid	Sep. 14, 2018
Dividends payable date of record	Aug. 24, 2018