Note 12 - Operating Segments (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	6 Months Ended	12 Months Ended
Jan. 03, 2012	Dec. 31, 2011	Dec. 31, 2012	Jun. 30, 2011	Dec. 27, 2011
Number of Reportable Segments	1		3
Business Acquisition, Cost of Acquired Entity, Purchase Price			$ 11,041		$ 11,041
Disclosure on Geographic Areas, Revenue from External Customers Attributed to Foreign Countries		10,274	18,957	21,919
LDI Acquisition [Member]
Business Acquisition, Cost of Acquired Entity, Purchase Price		$ 11,041

Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration