Stockholders' Equity (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	1 Months Ended	9 Months Ended
Oct. 31, 2012	Aug. 03, 2012	Oct. 02, 2012
Stockholders' Equity
Cash dividend paid (in dollars per share)	$ 0.12	$ 0.12
Aggregate dividend payment	$ 6,400	$ 6,400	$ 6,435

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.

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

Name:	us-gaap_DividendsCommonStockCash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration