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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- Definition

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

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Quarterly Dividend Rate Increase

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SUBSEQUENT EVENTS (Details Textual) - $ / shares				3 Months Ended		9 Months Ended
SUBSEQUENT EVENTS (Details Textual) - $ / shares	Jan. 02, 2019	Dec. 07, 2018	Oct. 24, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Subsequent Event [Line Items]
Dividends declared per share (dollars per share)				$ 0.68	$ 0.62	$ 2.04	$ 1.86
Quarterly Dividend Rate Increase				0.00%		0.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends declared per share (dollars per share)			$ 0.72
Dividends payable, date to be paid	Jan. 02, 2019
Dividends payable, date of record		Dec. 07, 2018