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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Amount of stock repurchase plan authorized.

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Describes the event or transaction that occurred between the balance sheet date and the date the financial statements are issued or available to be issued.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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Subsequent Events (Details Textuals) - USD ($)		3 Months Ended			9 Months Ended
Subsequent Events (Details Textuals) - USD ($)	Nov. 01, 2016	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Authorized amount of repurchase		$ 400,000,000			$ 400,000,000
Dividends declared per share (usd per share)		$ 0.50	$ 0.50	$ 0.5	$ 1.50	$ 1.5
Subsequent event description					0
Dividend Declared \| Subsequent Event
Subsequent Event [Line Items]
Dividends declared per share (usd per share)	$ 0.5