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Stockholders' Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended				12 Months Ended
	Feb. 24, 2016	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 27, 2015	Dec. 28, 2014	Dec. 31, 2013
Dividends Payable [Line Items]
Common stock, dividends per share		$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.24
Dividends, common stock, cash		$ 7,185	$ 7,333	$ 7,391	$ 7,423	$ 29,332
Common stock, dividends, per share, declared						$ 0.24	$ 0.00	$ 0.00
Subsequent event [Member]
Dividends Payable [Line Items]
Common stock, dividends, per share, declared	$ 0.07
Dividends payable, date to be paid	Mar. 10, 2016
Dividends payable, date of record	Feb. 29, 2016

X

- Definition

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

+ References

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

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

+ References

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=6367179&loc=d3e4304-108586

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

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

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