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 EVENTS (Details Textual) - $ / shares		12 Months Ended
SUBSEQUENT EVENTS (Details Textual) - $ / shares	Feb. 01, 2018	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Subsequent Event [Line Items]
Common stock, dividends, per share, declared		$ 0.25	$ 0.25	$ 0.25
Subsequent Event
Subsequent Event [Line Items]
Dividend declared date	Feb. 01, 2018
Common stock, dividends, per share, declared	$ 0.25
Dividend payable date	Feb. 20, 2018
Dividends payable date of record	Feb. 12, 2018