Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	1 Months Ended
Dec. 30, 2012	Jan. 01, 2012	Apr. 30, 2012 BPR Triax	Apr. 17, 2012 BPR Triax employee
Loss contingencies
Number of employees of BPR Triax charged with allegations of corruption				2
Annual revenue	$ 658,545	$ 682,627	$ 4,000

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration