Dividend Payment (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended	9 Months Ended
Oct. 01, 2012	Oct. 06, 2012	Jul. 09, 2012	Jul. 02, 2012	Apr. 16, 2012	Apr. 06, 2012	Jan. 05, 2012	Dec. 22, 2011	Oct. 06, 2012	Oct. 01, 2011	Oct. 06, 2012	Oct. 01, 2011
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.08			$ 0.08		$ 0.07		$ 0.07	$ 0.08	$ 0.25	$ 0.23	$ 0.25
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)		$ 0.08	$ 0.08		$ 0.07		$ 0.07
Dividends, Common Stock, Cash (in dollars)		$ 1,100	$ 1,100		$ 926		$ 906

Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: 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=6959260&loc=d3e187085-122770

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

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- Definition

Equity impact of common stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.

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